Which of the following is not a function of the respiratory system?
A. Assists in the synthesis of vasodilators
B. Aids in defecation
C. Helps regulate blood pressure
D. Control of pH
E. Promotes the flow of lymph and venous blood
Answer: A
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In the DNA damage response,
A. repair enzymes replace mismatched nucleotides in RNA. B. repair enzymes replace mismatched nucleotides in DNA. C. repair enzymes replace mismatched amino acids in protein. D. more than one codon encodes one type of amino acid.
In what vessel is blood pressure the highest?
A) artery B) arteriole C) capillary D) venule E) vein
Match the following reflexes to their function:
A) Plantar B) Crossed-extensor C) Flexor D) Stretch E) Golgi tendon 1) Tests both upper and lower motor pathways. The sole of the foot is stimulated with a dull instrument. 2) Consists of an ipsilateral withdrawal reflex and a contralateral extensor reflex; important in maintaining balance. 3) Produces a rapid withdrawal of the body part from a painful stimulus; ipsilateral. 4) Prevents muscle overstretching and maintains muscle tone. 5) Produces muscle relaxation and lengthening in response to tension; the contracting muscle relaxes as its antagonist is activated.
The ________ show(s) a remarkable degree of degeneration (involution) with age.
A. spleen B. lymph nodes C. appendix D. thymus E. pharyngeal tonsils