The surge of sex hormones that accompanies puberty has a wide range of effects on the body. One of those effects is to enhance the activity of the sebaceous glands, increasing the production of sebum
Which of the following is the most likely to result from the increased sebaceous activity?
A) Increased hair growth.
B) Decreased vitamin D synthesis.
C) Increased cooling of the skin.
D) Increased oily appearance and more acne.
D
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During aging, muscle is often replaced by dense connective tissue, a process called _________
Fill in the blank with correct word.
Which of the following statements is incorrect
A) When sarcomeres are fully shortened, contraction cannot occur B) When sarcomeres are slightly less than fully shortened, contraction cannot occur C) Sarcomeres can produce the most tension when stimulated over a relatively wide range of resting lengths D) When the muscle is fully stretched, contraction cannot occur E) All sarcomeres in a muscle fiber contract and relax together
ECF volume is directly dependent on the total quantity of which of the following salts in the body?
a. salts of potassium b. salts of sodium c. salts of calcium d. salts of magnesium e. all of these equally.
Melatonin is released in response to
A. decreased sunlight. B. going to bed earlier. C. increased sunlight. D. staying awake later into the night.