When norepinephrine is released from postganglionic neurons, its targets are
A. adrenergic receptors on effectors such as smooth muscle.
B. adrenergic receptors on preganglionic sympathetic neurons.
C. cholinergic receptors on effectors such as cardiac muscle.
D. cholinergic receptors on preganglionic sympathetic neurons.
A
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In order to determine the LDL level in a patient's blood, it is necessary to measure
A) total cholesterol level. B) HDL level. C) triglyceride level. D) triglyceride and monoglyceride levels. E) total cholesterol level, HDL level, and triglyceride level.
The leading strand of DNA is formed as
A. a template. B. a continuous strand, adding to the 3´ end. C. short segments called Okazaki fragments. D. a continuous strand, adding to the 5´ end. E. soon as the lagging strand is formed.
Describe the blood vessels and contribution of anastomoses that constitute the cerebral arterial circle (circle of Willis)
What will be an ideal response?
What is the name for the region of the sarcomere that contains only thick filaments?
A) Z line B) A band C) H band D) I band