Mac Is 63 Years Old

question 98

Multiple Choice

Mac is 63 years old. Which of the following statements is TRUE?

• A) Mac's artery walls are thinning.
• B) Mac's blood pressure will remain about the same as it was in his 40s.
• C) Mac's blood cholesterol is increasing and deposits accumulate on artery walls.
• D) Proteins in Mac's lung tissue are becoming more elastic.

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Definitions:

Genital Arousal

Physiological reactions of the genital organs in response to sexual stimulation, leading to increased blood flow and erection or lubrication.

Suprachiasmatic Nucleus

A part of the brain located in the hypothalamus that regulates circadian rhythms.

Circadian Rhythm

A natural, internal process that regulates the sleep-wake cycle and repeats roughly every 24 hours, affecting physical, mental, and behavioral changes in living organisms.

Pineal Gland

A small, pine-cone-shaped endocrine gland in the brain that produces and secretes the hormone melatonin, which regulates sleep patterns.