Which lymphatic organ's major job is to destroy worn-out red blood cells and return some of the products to the liver?
A) tonsils
B) spleen
C) thymus gland
D) appendix
E) Peyer's patches
B
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Which of the following hormones reduces blood calcium concentration?
A. Calcitriol B. Calcitonin C. Thyroid hormone D. Parathyroid hormone
The pons and cerebellum arise from which secondary embryonic vesicle?
A) Mesencephalon B) Myelencephalon C) Metencephalon D) Diencephalon E) Telencephalon
Neurotransmitter action could be prevented, or disrupted, if a drug or other agent
What will be an ideal response?
Which of the following statements about the pineal gland is INCORRECT?
a. it is found in the diencephalon of the brain b. it produces melatonin c. it is important in maintaining in the circadian rhythms, or day-night cycles, of an individual d. it secretes androgens, along with the gonads