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Select all that apply: What factors affect peripheral resistance?

If the SA node is damaged and AV node takes over setting the pace of the heart, the resulting heart rate would be:

Depolarization of the SA node stimulates depolarization of the muscle cells of the left and right atria.

1. Name this structure (11) 2. Name this bone (12)  3. Name this structure (13)   

49) name this muscle 50) name this part of the the stomach 51) name this organ 52) name this organ 53) name this muscle

As pressure in the aorta rises due to atherosclerosis (blockages), more ventricular pressure is required to open the aortic semilunar valve.

An ECG provides direct information about valve function.

Which of the following is NOT part of the conduction system of the heart?

Select all that apply: under which circumstances would pre-capillary sphincters open and allow increased blood flow into the tissues?

1. Name this structure (24) 2. Name this structure (25)  3. Name this specific region of the small intestine (26)