what structures are associated with the integumentary system

^{The integumentary system is composed of the following parts:}

• Skin
• Skin appendages Hairs Nails Sweat glands Sebaceous glands
• Subcutaneous tissue and deep fascia
• Mucocutaneous junctions
• Breasts

What are the layers of the integumentary system?

The skin is composed of three layers:

• Epidermis: The outermost layer of the skin, which is composed of squamous cells. This layer includes two distinct types: thick skin and thin skin.
• Dermis: The thickest layer of the skin, which lies beneath and supports the epidermis.
• Hypodermis (subcutis): The innermost layer of the skin, which helps insulate the body and cushion internal organs.

What are the five functions of the integumentary system?

• Protection. Microorganism, dehydration, ultraviolet light, mechanical damage.
• Sensation. Sense pain, temperature, touch, deep pressure.
• Allows movement. Allows movement muscles can flex & body can move.
• Endocrine. Vitamin D production by your skin.
• Excretion.
• Immunity.
• Regulate Temperature.

What are the 3 accessory organs of the integumentary system?

• Accessory structures of the skin include the hair, nails, sweat and sebaceous glands.
• Hair's primary functions are protection, warmth and sensory reception.
• Nails protect the tips of the fingers and toes.
• The two main types of sweat gland –eccrine and apocrine – are responsible for regulating body temperature.

What are organs and tissues make up the integumentary system?

What are the two components of the integumentary system quizlet?

• Cutaneous membrane and accessory structures. Name the two major components of the integumentary system.
• Epidermis and dermis.
• Hair, Nails, and Multicellular Exocrine glands.
• Subcutaneous layer and hypodermis.
• Four layers (No lucidum)
• five layers.
• Stratum corneum.
• Stratum corneum.

See more

What are the 3 main structures of the integumentary system?

The Three Layers of Skin and Their FunctionsThe Epidermis. The epidermis is the water-resistant outer layer of skin and the body's first line of defense against environmental elements, ultraviolet radiation, bacteria, and other germs. ... The Dermis. The dermis is the layer of skin under the epidermis. ... The Hypodermis.

Which two main structures of the integumentary system are involved?

Gross Anatomy of the Integumentary System These layers – the epidermis and the dermis – contain a variety of structures, including blood vessels, hair follicles, and sweat glands. Beneath the dermis lies the hypodermis (subcutis). It is composed mainly of fatty tissue.

What are the 12 structures of the integumentary system?

The integumentary system is composed of the following parts:Skin.Skin appendages. Hairs. Nails. Sweat glands. Sebaceous glands.Subcutaneous tissue and deep fascia.Mucocutaneous junctions.Breasts.

What structures are associated with the integumentary system quizlet?

What structures are associated with the integumentary system? The skin, hair, nails, glands, and nerves.

What are the 5 functions of the integumentary system?

Following are the major functions of the integumentary system:Protection. The skin protects against abrasion and the harmful effects of ultraviolet light. ... Sensation. ... Temperature regulation. ... Vitamin D production. ... Excretion.

What are the 4 types of integumentary system?

The integumentary system consists of the skin, hair, nails, the subcutaneous tissue below the skin, and assorted glands.

What are the 7 functions of the integumentary system?

Terms in this set (7)Protection. Microorganism, dehydration, ultraviolet light, mechanical damage.Sensation. Sense pain, temperature, touch, deep pressure.Allows movement. Allows movement muscles can flex & body can move.Endocrine. Vitamin D production by your skin.Excretion. ... Immunity. ... Regulate Temperature.

What are the structures of the skin?

Skin has three layers:The epidermis, the outermost layer of skin, provides a waterproof barrier and creates our skin tone.The dermis, beneath the epidermis, contains tough connective tissue, hair follicles, and sweat glands.The deeper subcutaneous tissue (hypodermis) is made of fat and connective tissue.

What are the components of the dermis?

Components of the dermis include: Blood vessels: Transport oxygen and nutrients to the skin and remove waste products. These vessels also transport vitamin D from the skin to the body. Lymph vessels : Supply lymph (milky fluid containing white blood cells of the immune system) to skin tissue to fight microbes.

What are the layers of the epidermis?

The epidermis is composed of five sublayers: 1 Stratum corneum: The top layer of dead, extremely flat cells. Cell nuclei are not visible. 2 Stratum lucidum: A thin, flattened layer of dead cells. Not visible in thin skin. 3 Stratum granulosum: A layer of rectangular cells that become increasingly flattened as they move to the surface of the epidermis. 4 Stratum spinosum: A layer of polyhedral-shaped cells that flatten as they get closer to the stratum granulosum. 5 Stratum basale: The innermost layer of elongated column-shaped cells. It consists of basal cells that produce new skin cells.

What is the innermost layer of the epidermis?

The innermost layer of the epidermis contains keratinocytes called basal cells. These cells constantly divide to produce new cells that are pushed upward to the layers above. Basal cells become new keratinocytes, which replace the older ones that die and are shed. Within the basal layer are melanin-producing cells known as melanocytes. Melanin is a pigment that helps protect the skin from harmful ultraviolet solar radiation by giving it a brown hue. Also found in the basal layer of the skin are touch receptor cells called Merkel cells.

What is the outermost layer of the skin?

The outermost layer of the skin, composed of epithelial tissue , is known as the epidermis. It contains squamous cells, or keratinocytes, which synthesize a tough protein called keratin. Keratin is a major component of skin, hair, and nails. Keratinocytes on the surface of the epidermis are dead and are continually shed and replaced by cells from beneath. This layer also contains specialized cells called Langerhans cells that signal to the immune system when there is an infection. This aids in the development of antigen immunity.

What is the pigment that protects skin from ultraviolet radiation?

Melanin is a pigment that helps protect the skin from harmful ultraviolet solar radiation by giving it a brown hue. Also found in the basal layer of the skin are touch receptor cells called Merkel cells. The epidermis is composed of five sublayers: Stratum corneum: The top layer of dead, extremely flat cells.

What are the functions of the dermis?

The dermis also contains specialized cells that help regulate temperature, fight infection, store water, and supply blood and nutrients to the skin. Other specialized cells of the dermis help in the detection of sensations and give strength and flexibility to the skin. Components of the dermis include:

How thick is the epidermis?

The epidermis includes two distinct types of skin: thick skin and thin skin. Thick skin is about 1.5 mm thick and is found only on the palms of the hands and the soles of the feet. The rest of the body is covered by thin skin, the thinnest of which covers the eyelids.

What is the integumentary system?

The integumentary system is made up of several organs and structures including the skin, hair, nails, glands, and nerves. The primary function of the integumentary system is to protect the inside of the body from elements in the environment—like bacteria, pollution, and UV rays from the sun. The skin and its associated structures also retain bodily ...

How many exocrine glands are there in the integumentary system?

The integumentary system has four types of exocrine glands, which secrete some type of substance outside the cells and body.

What are the layers of the skin?

Layers of the Skin. There are two layers of the skin: The epidermis: The outer layer of the skin that makes up its strong protective covering. The dermis: Located under the epidermis; most of the structures of the skin are located in the dermis (such as various types of glands and hair follicles). The fatty layer of the skin is a layer ...

What are the segments of the nail?

Nails. Just like other body parts, nails consist of several segments, including: The nail plate: The part of the nail that is visible. The nail bed: The skin that lies beneath the nail plate. The cuticle: The thin line of tissue that is located at the base of the nail and overlaps the nail plate.

What is the fatty layer of the skin?

The fatty layer of the skin is a layer of subcutaneous (under the skin) tissue , also known as the hypodermis. 1 The fatty layer serves many different functions, including: Providing a cushion for the skin. Storing fuel for the body (in the form of fat cells)

How thick is the skin?

To function as a protective barrier, it must cover the entire outside of the body, from the top of a person’s head to the end of the toes. The skin is approximately 2 mm (0.079 inches) thick and in its entirety weighs nearly 6 pounds.

Which system is very active in working with other organ systems to maintain the body's overall balance?

The integumentary system is very active in working with other organ systems to maintain the body’s overall balance (called homeostasis). Examples of how the skin helps each body system maintain homeostasis include:

What are the structures that grow out of the skin?

Hairs. Hairs are filamentous cornified structures which grow out of the skin and cover most of the body surface. Several areas of the body like the palms, soles, flexor surface of the digits and specific parts of the reproductive organs are devoid of hairs.

What is the body system that surrounds you?

Integumentary system. The integumentary system is the body system which surrounds you, both literally and metaphorically speaking. If you look in the mirror you see it, if you look anywhere on your body you see and if you look around you in the outside world, you see it.

Where is the nail plate located?

The nail plate is a rectangular and convex structure embedded within the nail folds. It originates from the nail matrices, found at the base of the nails. The nail plate is completely free distally to the onychodermal band (distal margin of the nail bed).

What is the sac that contains hair?

The hair follicle is the sac containing the hair, out of which it grows. It is actually a downgrowth of the dermis and contiguous with the epithelium. The hair follicles go through a cyclic activity of hair growth and loss.

What is the function of skin?

The skin has a significant capacity for renewal and crucial roles for the normal functioning of the human body. It is an effective barrier against potential pathogens and protects against mechanical, chemical, osmotic, thermal and ultraviolet radiation damage (through melanin).

Why is the skin important for locomotion?

The skin greatly assists in locomotion and manipulation due to its good frictional properties given by its texture and elasticity.

Where does the epithelium transition to?

These are regions of the body where there is a transition from mucosa to skin. At such regions, epithelium transitions to epidermis, lamina propria changes to dermis and smooth muscle becomes skeletal muscle. They occur at orifices in areas like the lips, nostrils, conjunctivae, urethra, vagina, foreskin and anus.

What is the integumentary system?

Your integumentary system is located in your skin, and is responsible for producing both oil and sweat. Explore the accessory structures of the integumentary system, and take a look at two of the accessory structures that secrete substances from inside your body to the outside: the sweat glands and the sebaceous glands. the sebaceous glands and sweat glands, and what they do for the body. Updated: 09/26/2021

Which two structures secrete substances from inside the body to the outside?

In this lesson, we'll be looking at two of the accessory structures that secrete substances from inside your body to the outside, the sweat glands and the sebaceous (or oil) glands . Both of these structures are considered to be exocrine glands because they secrete substances through ducts to the outside of the body.

Why are sebaceous glands called oil glands?

These glands are more commonly referred to as oil glands because they secrete an oily liquid into the hair follicles or onto the surface of our skin. Let's take a look.

What is the name of the gland that secretes sweat?

The rest of your body has what we call eccrine (or merocrine) sweat glands. These glands secrete their substances directly onto the surface of the skin.

Why are exocrine glands considered exocrine glands?

Both of these structures are considered to be exocrine glands because they secrete substances through ducts to the outside of the body.

What happens when sebum is blocked?

When sebum starts to build up in the blocked duct, it creates pressure beneath the surface and the formation of a pimple! This can cause a bacterial infection and inflammation. When the pressure gets to be too much, the follicle can rupture, filling with fluid and that nasty white pus!

Where are sebaceous glands found?

They're found almost all over your body; well, wherever you have hair, at least, while sebaceous follicles are found mostly on your face, back, chest, nipples and genital regions.

What is the purpose of the integumentary system?

Other than that, the integumentary system organs work together to provide insulation and help in excreting waste from the body. This Bodytomy post has more information.

What is the most important function of the integumentary system?

The most important function of the integumentary system is protection. The organs of the integumentary system form a water-proof layer over the body that also work as a physical barrier against microorganisms that cause integumentary system diseases.

What are the two glands that are present in the skin?

The glands present in the skin are sweat glands and sebaceous glands. The sweat glands release sweat which is the primary way of cooling the body.The sebaceous glands, on the other hand, release sebum – an oily substance that lubricates the skin and the hair.

What organs work together to provide insulation and help in excreting waste from the body?

Other than that, the integumentary system organs work together to provide insulation and help in excreting waste from the body. This Bodytomy post has more information. Skin, which is the largest organ of the body is the main organ of the integumentary system as well. Other than the skin, the nails, hair, scales, ...

Why is the integumentary system important?

They also ensure that the internal environment of the body is not affected due to changes in the conditions in the environment outside. Hence the integumentary system organs play an important role in the proper functioning of all other systems.

What are the organs of a bird?

These are typically present in birds. They aid birds in flight, and also provide insulation, water proofing, and camouflage. The skin, which is the main organ, along with its extensions the hair, nail, scales, and feathers protect the inner tissues of the body.

What are the structures that cover the body of fish, reptiles, and arthropods?

Scales. Scales are rigid plate-like structures that cover the body of fish, reptiles, and arthropods. These grow from the skin of an animal and their function is to provide protection to the inner tissues of the body.

What is the anatomy of the integumentary system?

Anatomy (Structures) of the Integumentary System. The skin and its accessory structures make up the integumentary system, which provides the body with overall protection. The skin is made of multiple layers of cells and tissues, which are held to underlying structures by connective tissue.

Which layer of the dermis is thicker?

Figure 6.4 image description: This micrograph shows layers of skin in a cross section. The papillary layer of the dermis extends between the downward fingers of the darkly stained epidermis. The papillary layer appears finer than the reticular layer, consisting of smaller, densely-packed fibers. The reticular layer is three times thicker than the papillary layer and contains larger, thicker fibers. The fibers seem more loosely packed than those of the papillary layer, with some separated by empty spaces. Both layers of the dermis contain cells with darkly stained nuclei. [Return to Figure 6.4].

What is the largest organ system in the human body?

The skin and accessory structures are the largest organ system in the human body. The integumentary system refers to the skin and its accessory structures. In the adult human body, the skin makes up about 16 percent of body weight and covers an area of 1.5 to 2 m 2. In fact, the skin and accessory structures are the largest organ system in ...

Why is collagen important for skin?

due to a tight meshwork of fibers. Elastin fibers provide some elasticity to the skin, enabling movement. Collagen fibers provide structure and tensile strength, with strands of collagen extending into both the papillary layer and the hypodermis. In addition, collagen binds water to keep the skin hydrated.

How many layers are there in the squamous epithelium?

The is composed of keratinized, stratified squamous epithelium. It is made of four or five layers of epithelial cells, depending on its location in the body. It is .

Which organ is most sensitive to touch?

These receptors are more concentrated on the tips of the fingers, which are most sensitive to touch, especially the. Meissner corpuscle.