Identify the effectors in this homeostatic reflex: Eating a salt-rich meal increases blood volume and pressure, stretching blood vessel walls
Nerve signals sent to the brainstem stimulate changes in hormonal and neural signaling. The heart rate is slowed, blood vessel walls are relaxed, and the kidneys increase urinary salt. The blood pressure returns toward normal.
A. brainstem and blood vessels
B. blood vessels, hormones, and nerves
C. heart, kidneys, and blood vessels
D. brainstem, blood vessels, and kidneys
E. hormones and nerves
C
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Unpaired arteries that branch from the abdominal aorta include the
A) superior mesenteric. B) phrenic. C) gonadal. D) suprarenal. E) lumbar.
Sympathetic stimulation increases contractile strength by:
a. decreasing sodium permeability b. increasing calcium permeability c. closing funny channels d. cause the resting potential to become more negative e. increasing threshold
Blood vessels in the ________ provide a hair with its sole source of nutrition.
A. bulb B. dermal papilla C. shaft D. root E. medulla
A protein that is bound to a carbohydrate is called a ________
A) proteocalyx B) glycoprotein C) phosphoprotein D) lipoprotein E) phospholipid