Receptors in the CNS that detect changes in arterial are actually sensitive to the H+ concentration of the brain extracellular fluid
Indicate whether the statement is true or false
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What is the effect of norepinephrine on the heart?
A. it decreases the rate and strength of contraction B. it increases the rate and strength of contraction C. it decreases the amount of blood pumped per minute D. it has no effect on the heart
What does "B" represent on the diagram of the skull and brain?
A. Subarachnoid space B. Subdural space C. Dural venous sinus D. Arachnoid mater E. Pia mater
Which of the following is a change that occurs in fetal circulation at birth?
A. Ductus venosus continues to carry blood to the liver B. Foramen ovale closes to become the fossa ovalis C. Umbilical arteries become the fossa ovalis D. Ductus arteriosis opens
Which of the following is not a possible cause of conduction deafness?
A) impacted cerumen B) otosclerosis C) cochlear nerve degeneration D) middle ear infection