What are the problems with the circulatory system?
What diseases affect the circulatory system?
- Fifteen circulatory system diseases. The cardiovascular system is composed of the heart and blood vessels. ...
- When to see a doctor. Some circulatory diseases, such as stroke, heart attacks, and burst aneurysms, are life-threatening and need emergency medical attention.
- Outlook. The outlook for circulatory system diseases depends on the underlying problem. ...
What are the problems in the circulatory system?
What causes circulatory system diseases?
- Trauma. An example of trauma may involve penetrating injuries from knife wounds that damage blood vessels. ...
- Aneurysms. Healthy blood vessels contract and expand to better handle varying blood flows. ...
- Vascular malformation. A vascular malformation is characterized by an abnormal connection between veins and arteries. ...
- Raynaud’s phenomenon/disease. ...
What are the symptoms of the circulatory system?
Symptoms of this one of common circulatory system diseases include: Chest pain. Pressure or squeezing in the chest. Frequent or infrequent chest pain. Tightness in chest. Diabetes, hypertension, smoking and other circulatory diseases can increase the risk for angina.
What are the disorders of the circulatory system?
Some Disorders of the Circulatory System
- High blood pressure (hypertension)
- Atherosclerosis
- Heart attack
- Deep vein thrombosis (deep vein thrombosis or DVT)
- Ischemia
- Stroke
What Are Mollusks?
You might even have eaten mollusks in the form of escargot, calamari, squid, scallops, clams, or oysters.
What phylum do mollusks belong to?
You might even have eaten mollusks in the form of escargot, calamari, squid, scallops, clams, or oysters. The phylum Mollusca is one of the larger invertebrate animal phyla, and its members can be found on land, as well as in both freshwater and saltwater environments. Only the phylum Arthropoda contains more invertebrate organisms.
How does radula work?
Once the radula scrape food into the mouth, the food encounters mucus (sort of like mollusk saliva), which coats it and makes it easier for cilia-like structures to help move the food into the stomach. The mucus remains attached to the food as it travels into the stomach, forming a mucus string. The mucus string remains attached through the stomach, and at the end of the stomach system, it's wrapped around on itself prior to being excreted.
Which muscle group controls shell motion?
One pair is for serving the foot region, another for the visceral region, and, in bivalves, a third is designated for the muscle that controls shell motion. You might already know that the human nervous system contains ganglia for regulating nervous function; well, mollusks have ganglia as well.
What is the function of the foot?
As you might imagine, the foot helps provide the organism with a means of motion in the form of a mucus-covered body part that glides across surfaces. The visceral mass is where the animal's major body systems (including the digestive, nervous, and circulatory systems) are found. And lastly, the mantle is a layer of tissue that acts as a flexible, ...
What is Heather's degree?
Heather has taught high school and college science courses, and has a master's degree in geography-climatology. Learn about the animal phylum Mollusca and its most important body systems. Mollusca includes a wide range of common invertebrate species that can inhabit land, freshwater, and saltwater environments, ...
Why are the foot ganglia important?
The foot ganglia are also important because they help to regulate the overall motion of the animal.
What is the circulatory system of the bivalves?
Bivalves have an open circulatory system that bathes the organs in hemolymph. The heart has three chambers, two auricles receiving blood from the gills, and a single ventricle. The ventricle (heart) is muscular and pumps hemolymph into the aorta, and then to the rest of the body.
Why does blood flow faster in cuttlefish?
Cuttlefish blood must flow more rapidly than that of most other animals because hemocyanin carries substantially less oxygen than hemoglobin. Snail (Gastropod) As in other molluscs, the circulatory system of snails is open, with the fluid, or haemolymph, flowing through sinuses and bathing the tissues directly.
What is the phylum of mollusks?
The mollusks compose the large phylum of invertebrate animals known as the phylum Mollusca. Around 85,000 existing species are recognized to be a member of this phylum. Mollusks are the largest marine phylum comprising 23% of all named marine organisms. Numerous mollusks also live in freshwater and terrestrial (on land) habitats.
How many chambers does the aorta have?
In the great majority of species, it has two chambers; an auricle (chamber or space), which receives haemolymph from the lung, and a ventricle, which pumps it into the aorta (artery). The aorta is short, and soon divides into two main vessels, one supplying the visceral mass, and the other supplying the head and foot.
Which mollusks are the most neurologically advanced?
Cephalopod mollusks, such as squid, cuttlefish, and octopus, are the most neurologically advanced of all invertebrates. The gastropods are by far the most numerous mollusks in terms of classified species, accounting for 80% of the total.
What is the molecule that is found in the blood of a slug?
Hemocyanin is similar to hemoglobin which is found in human blood. Another animinal within the Mollusca Phylum is a Slug. Slug's and Snail's have a very similar circulatory system. The fluid that is transported through the circulatory system of a Slug is called hemolymph.
What is the blood system of a snail?
Blood within a open circualtory system is pumped by a heart into the body cavities, where tissues are surrounded by blood. There are various animlas that fit the requirments of the Mollusa Phylum. One animal within the Mollusa Phylum is a Snail. A Snail has an open circulatory system which means that blood is not restricted from travelling within ...
What is the ventricle?
The ventricle pumps blood through an aortic trunk to all parts of the body through a group of arteries and capillaries. From the capillaries the blood flows into various spaces in the tissues called the hemocoel. From the hemocoel blood passes into the veins and back to the auricle.
Which system pumps blood into the body?
Open circulatory systems which have evolved through species such as crustaceans, insects, mollusks, and other invertebrates, pump blood into a hemocel with the blood extending back to the circulatory system betweens the various cells. Blood within a open circualtory system is pumped by a heart into the body cavities, ...
Which phylum has an open circulatory system?
Most animals within the Mollusca Phylum have an open circulatory system. Cephalopods have a closed circulatory system. Within a open circulatory system blood is not restricted to circulating within the blood vessels.
What animal is the phylym of the chiton?
A third animal within the Mollusa Phylym is a Chiton. A Chiton is a small ovular species with eight plates on its dorsal side, and an open ciculatory system. The artery takes the blood to the tissue, where it returns to the heart via a vein. In advanced animals, like humans, the blood goes from the heart to an artery, to a capillary (the name for a very small blood vessel) to the cells and back to the heart through a vein. This is important because as a rule, creatures with open circulatory systems aren't all that large.
Is hemolymph a fluid?
Hemolymph is a fluid in the circulatory system and is similar to the fluids and cells making up both blood and interstitial fluid including water, proteins, and fats. Hemocyanin is present in the hemolymph as the respiratory pigment within the circulatory system of a Slug.
How do cephalopods move?
They move by jet propulsion; water in the mantle cavity is squirted rapidly through a siphon. The foot has evolved into tentacles around head. Cephalopods have a powerful beak-like structure to tear apart prey. The sense organs of cephalopods are well developed.
What class are mollusks in?
Class: Gastropoda (snails) Class: Bivalvia (Clams) Class: Cephalopoda (Nautilus, Squid, Octopus) All mollusks have a visceral mass, a mantle, and a foot. The visceral mass contains the digestive, excretory, and reproductive organs. The mantle is a covering.
What do gastropods use radulas for?
Most are marine but there are also numerous freshwater and terrestrial species. Herbivorous gastropods use a radula to scrape food from surfaces. Carnivores may use a radula to bore a hole through surfaces such as bivalve (clam) shells. Some gastropods such as the slug (below) do not have a shell.
How do cephalopods hide from enemies?
Well-developed brains (especially in octopuses) give them a high learning capacity. Cephalopods can hide from enemies by releasing a dark colored fluid from ink sacs.
What muscle is cut so that the valves can be pulled apart?
Figure 5. The anterior and posterior adductor muscles being cut so that the valves can be pulled apart.
Why are the gills of a fish so large?
The gills are large because they are used for filter-feeding as well as respiration. Food is trapped by mucus on the gills and moved by cilia. Water enters and exits through siphons.
How do bivalves use their feet?
The shell is produced by the underlying mantle; it grows along the outer margins. They use their foot for burrowing. Mussels use their foot for the production of threads for attachment.
