EMBRYOLOGY
NERVOUS SYSTEM
|
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
|
|
|
digestive system
|
|
|
excretory system
|
|
|
skeletal system
|
|
|
nervous system
|
Detailed explanation-1: -Your heart (cardiac) conduction system sends the signal to start a heartbeat. It also sends signals that tell different parts of your heart to relax and contract (squeeze). This process of contracting and relaxing controls blood flow through your heart and to the rest of your body.
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: -Smooth muscle, found in the walls of the hollow internal organs such as blood vessels, the gastrointestinal tract, bladder, and uterus, is under control of the autonomic nervous system. Smooth muscle cannot be controlled consciously and thus acts involuntarily.