what are the three main body systems called ?

Answer 1

There are quite a few body systems, and it's hard to say which three are the most important without having access to the resource materials that explain your particular application. I did find one source that refers to the skeletal, muscular, and circulatory sytems as the "three main body systems." On the other hand, I found a resource that calls the "musculoskeletal system" a single body system. This resource also combines the endocrine and nervous systems into a "neuroendocrine" system. You wouldn't want to forget about the respiratory or digestive systems, either.

Answer 2

FYI....
There are Five Main Body System without which we cannot live...

1.Respiratory System
2.Digestive System
3.Excretory System
4.Reproductive System
5.Nervous System.

Answer 3

The major systems of the human body consist of:

Circulatory system
Digestive system
Endocrine system
Immune system/Lymphatic System
Integumentary system
Muscular system
Nervous system
Reproductive system
Respiratory system
Skeletal system
Urinary system

Answer 4

1. Circulatory System



2. Urinary System



3. Gas Exchange System

Answer 5

Oh boy....harking back to my dental school anat/physiology courses: There are elastic arteries, arteries surrounded by muscle tissue, and veins. These are the only three categories I can think of, but my answer very well might be wrong. Obviously, elastic arteries (such as the aorta) are meant to take blood flow in large volume, and nothing else. Muscled arteries (such as arterioles) are meant to control blood flow to extremities and organs (for various reasons). Veins, in addition to bringing de-oxygenated blood back to the heart, also serve as a reservoir of blood. When the circulatory system becomes hypovolemic, veins constrict, essentially bringing more blood into circulation. Arteries, as you may know, branch off into arterioles which in turn branch into capillaries--which are porous vessels through which nutrients can be delivered to the tissues and waste products can cross the membranes to be carried off. Capillaries, which are the junction between the "left side" and "right side" of your circulatory system (i.e. oxygenated side and de-oxygenated side, respectively) immediately turn into venules which are tributaries to veins. Also keep in mind that the lymphatic system drains into the veinous system at some point (perhaps at the superior vena cava--I can't remember).

Answer 6

The most vital to life are probably:

1. The cardiovascular system. (includes the heart, blood vessels, lymphatics and blood)
2. The respiratory system. (lungs and airway)
3. The nervous system (brain, spinal chord and peripheral nerves)

but their are others which are also very important and vital for life.

Answer 7

According to GCSE TEACHERS the answer is

1.Digestive system

2.Circularly (blood) system

3. Respiratory system

Answer 8

Circulatory, respiratory, nervous

Answer 9

digestive
nervous
endocrine
skeletal
muscle
lymph
reproductive
circulatory

Answer 10

circulatory, lymphatic, nervous