The vascular link between the hypothalamus and the ________ is called the hypothalamo-hypophyseal portal system.
A. posterior pituitary
B. pineal gland
C. thalamus
D. anterior pituitary
Answer: D
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Hypertension is frequently called the "silent killer."?
Indicate whether the statement is true or false
A positive feedback loop occurs when the outcome of an event causes the event to continue occurring and amplifies its effects. Which of the following aspects of an action potential constitutes a positive feedback loop?
A. Opening of voltage-gated sodium channels causes voltage-gated potassium channels to open and release potassium to the extracellular environment, slowly counteracting sodium influx. B. The sodium-potassium pump exactly balances ion leaks by pumping three sodium and two potassium ions across the membrane. C. An initial flow of sodium ions into the neuron opens voltage-gated sodium channels, rapidly causing more sodium to enter. D. The threshold potential is around -55mV.
Jason injured his hamstring muscle group during football practice. He will be unable to perform ________
A) thigh extension and knee flexion B) dorsiflexion C) thigh abduction and adduction D) leg rotation and plantar flexion
The GM-CSF growth factor accelerates the formation of all granulocytes and monocytes from their progenitor cells.
Answer the following statement true (T) or false (F)