Which of the following functions is associated with efferent neurons?
Carrying stimulus to the spinal cord and the brain from all other parts of the body
Conducting impulses from sensory neurons to motor neurons
Regulating neuron function
Carrying stimulus away from the brain and spinal cord
The Correct Answer is D
a. Carrying stimulus to the spinal cord and the brain from all other parts of the body: This is the function of afferent neurons, not efferent neurons.
b. Conducting impulses from sensory neurons to motor neurons: This describes interneurons, which relay signals between sensory and motor neurons.
c. Regulating neuron function: This is a vague description and doesn't specifically relate to the primary role of efferent neurons.
d. Carrying stimulus away from the brain and spinal cord: This correctly describes efferent neurons, which carry motor commands from the central nervous system to muscles and glands.
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Related Questions
Correct Answer is D
Explanation
a. The outer tissue layer consisting of renal corpuscles and convoluted tubules: This describes the renal cortex, not the renal pelvis.
b. The inner tissue layer consisting of the loop of Henle and collecting tubules: This describes the renal medulla, not the renal pelvis.
c. The expanded area of a renal tubule that encloses the glomerulus: This describes Bowman's capsule, not the renal pelvis.
d. The cavity where urine flows from the calyces to enter the ureters: Correct. The renal pelvis is the funnel-shaped cavity that collects urine from the calyces and channels it into the ureter.
Correct Answer is C
Explanation
a. Outermost layer that lies underneath the pericardial sac: This describes the epicardium, not the endocardium.
b. Outer layer that produces serous fluid: This describes the pericardium, particularly the visceral layer.
c. Inner layer that is continuous with the blood vessels: The endocardium is the innermost layer of the heart, lining the heart chambers and continuous with the endothelium of blood vessels.
d. Central layer that contracts and relaxes: This describes the myocardium, the muscular middle layer of the heart
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