Erection and ejaculation can be initiated by
A. manual stimulation of the penis.
B. contraction of smooth muscle.
C. impulses from the cerebellum.
D. increased blood levels of testosterone.
E. increased levels of LH and FSH.
A
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The area underneath the middle meninx where cerebrospinal fluid is located is the __________ space
Fill in the blank with correct word.
Sensory receptors are specialized cells or multicellular structures that collect information from the environment and stimulate neurons to send impulses along sensory fibers to the brain.
Answer the following statement true (T) or false (F)
One of the least complicated of the endocrine control systems directly responds to changing blood levels of ions and nutrients. Which of the following describes this mechanism?
A) carbohydrate oxidation B) protein synthesis C) catabolic inhibition D) humoral stimulation
The __________ center prevents the inspiratory neurons from being switched off, thus providing an extra boost to the inspiratory drive
Fill in the blank(s) with correct word