Answer:
The binding of ACh to the muscarinic receptor indirectly affects the permeability of K⁺channels. This can produce hyper polarization in some organs if channels are opened, and depolarization in others if channels are closed.
Explanation:
For example, in the heart it is the beta-gamma compound that fixes to the K+ channels of heart muscle and sources them to exposed. This leads to K+ dispersion out of the cell and the cell converts into hyper polarized consequential in a reduction in heart rate. In contrast, in smooth muscle of the stomach the alpha sub unit fixes to K+ channels producing them to close. This decreases the external diffusion of K+ and the cell converts depolarized ensuing in smooth muscle contraction.
The part of the brain stem that regulates vital activities such as heartbeat,breathing and digestion is the<u> Medulla oblongata. </u>The bottom part of brain which regulate your breathing,heart rhythms,blood pressure and swallowing.
The respiratory center is located in the medulla oblongata and is involved in the minute-to-minute control of breathing.It's locate where the brain and spiral cord connect, it help in control vital processes like our heartbeat, breathing and blood pressure.
This also responsible for reflexes of the face and throat like - coughing,sneezing,gagging. It can lead to respiratory failure, loss of sensation, paralysis,it causes 'brain death" and person can not survive.
To learn more about Respiratory center here
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Answer: Option A
The embryo in the mother's womb cannot eat or drink anything from the outer world. It gets its nutrition from the placenta that is attachment found between the mother and embryo.
The nutrients and gases pass from the mother to embryo in following order. Maternal blood pool ; chorionic villus ; umbilical vein.
In this way the nutrients and gases are carried to the fetus and waste products are taken back through this umbilical cord back for purification.
Elastic stockings or also known as compression stockings are recommended after an operation in order to prevent the formation of blood clots in the leg that is operated. Usually, they are recommended when there will be difficulty in moving around after surgery.
When assessing a patient who wears them, the health professional should ensure that every part on the edge of the stockings is receiving enough circulation. The toes should be checked for signs of reduced blood flow and also the patient should be asked for any dangerous signs of numbness or tingling.
The chemical composition of bone is made up of collagen and calcium, which makes bones stronger
