The renin-angiotensin system in the kidneys helps to regulate:
A. heart rate.
B. cardiac contractility.
C. blood pressure.
D. the release of ADH.
Ans: C. blood pressure.
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The anterior ramus of a typical spinal nerve innervates the
A. deep muscles of the back and the skin of the back. B. major thoracic and abdominal organs. C. abdominal wall. D. anterior and lateral trunk and the limbs. E. special senses.
Damage to the cupula of the lateral semicircular duct would interfere with our perception of
A) horizontal rotation of the head. B) vertical rotation of the head. C) linear acceleration. D) the direction of gravitational pull. E) None of the answers are correct.
The nodes of Ranvier are
a. action potential recordings b. breaks in the myelin covering c. spaces between neurons d. specialized cells around axons e. structures on axon terminals that release neurotransmitter
Oxygen enters the blood from the lungs by facilitated diffusion
Indicate whether the statement is true or false