The last electron acceptor of the electron transport chain is

In the absence of oxygen, pyruvate will be

This part of the brain regulates heart rate.

Select all correct answers. Deoxygenated blood would be found in which of the following vessels?

The SA node, gives us an autorhythmic sinus rhythm of about 100 beats/min, which is much higher than the average heart rate is 75 beats/min. This is because the resting heart rate is decreased when ___________ nervous system signals from the __________ nerve releases the neurotransmitter ___________ onto conduction system fibers.

What is an example of an anastomosis in the body?

The right side of the heart plays a role in _______________, while the left side of the heart plays a role in _______________.

Which of the below would decrease blood pressure.

Arteries always carry oxygenated blood while veins always carry de-oxygenated blood.

Cellular response to a hormone is dependent on the presence or absence of specific receptors.