what is the function of a tubercle on a bone

What is the function of a tubercle in the skeleton?

In the human skeleton and that of at least other mammals, a tubercle, tuberosity or apophysis is a protrusion or eminence that serves as an attachment for skeletal muscles. The muscles attach by tendons, where the enthesis is the connective tissue between the tendon and bone.

What is the function of a tuberosity in the skeleton?

Bones. In the human skeleton, a tubercle or tuberosity is a protrusion that serves as an attachment for skeletal muscles. The muscles attach by tendons, where the enthesis is the connective tissue between the tendon and bone. For example, the tibial tuberosity creates an attachment point for the ligamentum patellae, or patellar ligament.

What does tubercle mean in medical terms?

tubercle [too´ber-k'l] 1.a nodule or small eminence, especially one on a bone, for attachment of a tendon; see also tuberand tuberosity. Called also tuberculum. adj., adjtuber´cular, tuber´culate. 2.a small, rounded nodule produced by the bacillus of tuberculosis (Mycobacterium tuberculosis).

Where do tubercles develop on the body?

Within the human body, there are numerous sites where tubercles develop. On bones, they are usually eminences used for muscle connections. Larger tubercles are also known as tuberosities.

What is the general function of a tuberosity or tubercle quizlet?

A tuberosity provides a roughened surface for muscles or ligaments to attach to the end of long bones. The ligaments attached to the tibial tuberosity are responsible for moving the knee joint. A tubercle is smaller than a tuberosity.

What is a tubercle quizlet?

Tubercle. A small, rounded projection. Tuberosity. Large rounded projection; may be roughened.

What bones have a tubercle?

Learning ObjectivesBone Markings (Table 7.2)MarkingDescriptionExampleSpineSharp processIschial spineTubercleSmall, rounded processTubercle of humerusTuberosityRough surfaceDeltoid tuberosity18 more rows

What tubercle means?

Definition of tubercle 1 : a small knobby prominence or excrescence especially on a plant or animal : nodule: such as. a : a protuberance near the head of a rib that articulates with the transverse process of a vertebra.

Where are the genial tubercles located quizlet?

the genial tubercles (mental spine) are found on the lingual midline, just above the inferior border of the mandible.

What is an example of a tubercle?

Examples include the tibial tuberosity, deltoid tuberosity, and ischial tuberosity. Tubercle - A small, rounded prominence where connective tissues attach. Examples include the greater and lesser tubercle of the humerus.

What do tubercles consist of?

A tubercle usually consists of a centre of dead cells and tissues, cheeselike (caseous) in appearance, in which can be found many bacilli. This centre is surrounded by radially arranged phagocytic (scavenger) cells and a periphery containing connective tissue cells.

Whats the difference between a tubercle and a tuberosity?

Tubercle vs tuberosity A tubercle is a small rounded prominence, often a site of tendon or ligament attachment e.g. adductor tubercle of the femur. A tuberosity is larger, found in varying shapes and often rough in texture.

How does a tubercle form?

In most forms of the disease, the bacillus spreads slowly and widely in the lungs, causing the formation of hard nodules (tubercles) or large cheeselike masses that break down the respiratory tissues and form cavities in the lungs.

Where is tubercle of rib?

On the posterior surface at the junction of the neck and body of the rib, and nearer the lower than the upper border, is an eminence—the tubercle; it consists of an articular and a non-articular portion.

What is the greater tubercle?

The greater tuberosity is the prominent area of bone at the top of the humerus and is the attachment for the two large, powerful rotator cuff muscles - supraspinatus and infraspinatus. It is injured/fractured in a fall by either landing directly onto the side of your shoulder or landing with your arm outstretched.

What is a condyle quizlet?

condyle. a rounded process that usually articulates with another bone.

What is a fissure quizlet?

fissure. deep grooves that separate large regions of the brain. longitudinal fissure. separates cerebral hemispheres.

What is a gyrus quizlet?

Gyrus. a convex fold or elevation in the surface of the brain. Sulcus. (anatomy) any of the narrow grooves in an organ or tissue especially those that mark the convolutions on the surface of the brain.

What happens to Mullerian ducts in a male fetus as it develops quizlet?

In a male fetus, as the fetus starts to develop, the testes will start to push out through the muscles of the abdomen and form the scrotum. As the fetus starts to develop over time, the Wolfian ducts will stay attached and the Mullerian ducts will start to dissolve.

What is tubercle in plants?

In plants. A tubercle is generally a wart-like projection, but it has slightly different meaning depending on which family of plants or animals it is used to refer to. In the case of certain orchids and cacti, it denotes a round nodule, small eminence, or warty outgrowth found on the lip.

What is Darwin's tubercle?

These eventually coalesce to form the outer ear. Darwin's tubercle is a minor malformation of the junction of the fourth and fifth hillocks of Hiss. It is found in a substantial minority of people and takes the form of a cartilaginous node or bump on the rim of their outer ear, which is thought to be the vestige of a joint that allowed the top part of the ancestral ear to swivel or flop down over the opening to the ear.

What is the protrusion that attaches to the skeletal muscle?

In the human skeleton, a tubercle or tuberosity is a protrusion that serves as an attachment for skeletal muscles. The muscles attach by tendons, where the enthesis is the connective tissue between the tendon and bone. For example, the tibial tuberosity creates an attachment point for the ligamentum patellae, or patellar ligament.

What are the three types of tubercles in duck-billed dinosaurs?

In duck-billed dinosaurs, for example, three main types of tubercles are defined: small tubercles with no definit e arrangement (ground tubercles); larger, polygonal tubercles (pavement tubercles) up to 1 cm (0.4 in) in diameter, which are grouped into clusters separated by ground tubercles; and limpet -shaped conical scutes.

Where is the septotubercular tract located?

The septotubercular tract can be found in the human, as well as in the sheep brain. It is found nearby the septohypothalamic tract. Its function to the brain is ambiguous at this point. Also, the tuberculum sellae is found at the base of the skull, which holds the hypophysis .

Where is the cartilaginous bump on the ear?

It is found in a substantial minority of people and takes the form of a cartilaginous node or bump on the rim of their outer ear, which is thought to be the vestige of a joint that allowed the top part of the ancestral ear to swivel or flop down over the opening to the ear.

What is a tubercle?

tubercle. (to͞o′bər-kəl) n. 1. An anatomical nodule. 2. A small elevation on the surface of a tooth. 3. A nodule or swelling, especially a mass of lymphocytes and epithelioid cells forming the characteristic granulomatous lesion of tuberculosis.

What is fibrous tubercle?

fibrous tubercle a tubercle of bacillary origin that contains connective tissue elements. Ghon tubercle Ghon focus. mental tubercle a prominence on the inner border of either side of the mental protuberance of the mandible. miliary tubercle one of the many minute tubercles formed in many organs in acute miliary tuberculosis.

What is a nodule in anatomy?

2. A circumscribed, rounded, solid elevation on the skin, mucous membrane, surface of an organ, or the surface of a bone, the latter giving attachment to a muscle or ligament. 3. dentistry a small elevation arising on the surface of a tooth.

Is tubercle a granuloma?

Morphologically indistinguishable lesions may occur in diseases caused by other agents; many observers use the term nonspecifically, that is, with reference to any such granuloma; other clinicians use tubercle only for tubercul ous lesions, and then designate those of undetermined causes as epithelioid-cell granulomas.

What is a tubercle?

What is Tubercle. The tubercle is a small, rounded prominence to which the connective tissues are attached. Examples of tubercle include the lesser tubercle of the humerus. Here, the lesser tubercle is the more prominent protuberance than the greater tubercle and is situated in front, directed medially and anteriorly.

What is the greater tubercle?

Discussing them further, the greater tuberosity of the humerus is a prominent area of the humerus at the top of the bone. It allows the attachment for two large, powerful rotator cuff muscles – supraspinatus and infraspinatus. Perhaps, it is known as the greater tubercle along with the lesser tubercle.

What is tuberosity in anatomy?

What is Tuberosity. Typically, the tuberosity is a moderate prominence to which the muscles and connective tissues are attached. And, its function is similar to that of a trochanter. Basically, trochanter is a large prominence on the side of the bone to which the largest muscle groups and most dense connective tissues are attached.

What is tubercle prominence?

But, tubercle refers to a small, rounded prominence where the connective tissues are attached.

What are the two types of protuberances on bones?

Generally, tuberosity and tubercle are two types of protuberances on bones of the skeleton of many mammals. Also, crests and trochanters are the other examples of such protrusions. They are a result of traction forces of connective tissue and muscles. Therefore, the main function of them is to provide sites for the attachment of muscles.

What are some examples of tubercles?

The examples of tubercles include the scalene tubercle on the first rib and the Chassaignac’s tubercle on the cervical vertebrae. In brief, tuberosity and tubercle are two types of protrusions or eminences in the bones of the human skeleton. And, their function is to serve as an attachment for skeletal muscles.

What is the difference between a tubercle and a tuberosity?

The main difference between tuberosity and tubercle is that tuberosity refers to a slightly larger lump on bones, but tubercle refers to the smaller lump. Some of the examples of tuberosity are the greater tuberosity of the humerus and the ischial tuberosity of the hip bone.

What is tubercle in medical terms?

Medical Definition of tubercle. 1 : a small knobby prominence or excrescence: as. a : a prominence on the crown of a molar tooth. b : a small rough prominence (as the greater tubercle or adductor tubercle) on a bone usually being smaller than a tuberosity and serving for the attachment of one or more muscles or ligaments.

What is a tubercle?

Definition of tubercle. 1 : a small knobby prominence or excrescence especially on a plant or animal : nodule: such as. a : a protuberance near the head of a rib that articulates with the transverse process of a vertebra. b : any of several prominences in the central nervous system. c : nodule sense b. 2 : a small abnormal discrete lump in the ...

Overview

In the skeleton of humans and other animals, a tubercle, tuberosity or apophysis is a protrusion or eminence that serves as an attachment for skeletal muscles. The muscles attach by tendons, where the enthesis is the connective tissue between the tendon and bone. A tuberosity is generally a larger tubercle.

In humans

In plants

In fungi

In animals

Within the human body, there are numerous sites where tubercles develop. On bones, they are usually eminences used for muscle connections. Larger tubercles are also known as tuberosities.
Tubercles are usually found behind the last molar in the upper jaw, covered by the gum. Surgery can be done to make tubercles less prominent.
In the human skeleton, a tubercle or tuberosity is a protrusion that serves as an attachment for s…

See also

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