Lymphocytes secrete antibodies, coordinate action of other immune cells, and serve in immune memory.
Answer the following statement true (T) or false (F)
True
Anatomy & Physiology
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Sperm cannot fertilize an egg until what has occurred?
A. Their plasma membrane is toughened by cholesterol. B. They undergo acromegaly. C. They lose their midpiece. D. They are in the vagina for 72 hours. E. They undergo capacitation.
Anatomy & Physiology
In birds, the hypothalamus does not
a. stimulate shivering. b. stimulate panting. c. stimulate erection of plumage. d. none of these.
Anatomy & Physiology
Areas of a myelinated axon that are not covered by myelin are called
A) gray matter. B) internodes. C) white matter. D) nodes. E) All of the answers are correct.
Anatomy & Physiology
Which of the following people would be in positive nitrogen balance?
a. growing children b. athletes in training c. a pregnant woman d. all of the above
Anatomy & Physiology