EVERYDAY SCIENCE

SCIENCE

NERVOUS SYSTEM

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
The muscles in the wall of the blood vessels contract or relax to vary the blood flow. Which body system regulates the contraction and relaxation of the muscles?
A
digestive system
B
excretory system
C
skeletal system
D
nervous system
Explanation: 

Detailed explanation-1: -The smooth muscle cell directly drives the contraction of the vascular wall and hence regulates the size of the blood vessel lumen.

Detailed explanation-2: -Arteries contain smooth muscle cells, which contract and relax to change the diameter of blood vessels, controlling blood flow to ensure that cells get the correct amount of oxygen and nutrients.

Detailed explanation-3: -Cardiac muscle tissue is one of the three types of muscle tissue in your body. The other two types are skeletal muscle tissue and smooth muscle tissue. Cardiac muscle tissue is only found in your heart, where it performs coordinated contractions that allow your heart to pump blood through your circulatory system.

Detailed explanation-4: -Smooth muscles regulate the flow of blood through arteries, arterioles, and veins, where they control the size of the lumen of the vessel.

There is 1 question to complete.