Question

multiple select question
select all that apply
choose all of the following that affect peripheral resistance.

• heart rate
• blood viscosity
• vessel length
• vessel radius

Explanation:

Peripheral resistance is affected by factors related to blood and blood vessels. Blood viscosity (thicker blood increases resistance), vessel length (longer vessels increase resistance), and vessel radius (smaller radius increases resistance) are key factors. Heart rate affects cardiac output, not peripheral resistance directly. So the correct options are those related to blood viscosity, vessel length, and vessel radius.

Answer:

B. Blood viscosity, C. Vessel length, D. Vessel radius