Which of the following is an organelle of locomotion?
A. nucleolus
B. endoplasmic reticulum
C. peroxisomes
D. Golgi apparatus
E. flagellum
E
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This figure shows a lymph node and its components. The region indicated by number 1 is a
A. germinal center. B. mantle zone. C. cortical sinus. D. medullary cord. E. medullary sinus.
The intestinal feature responsible for increasing the absorptive surface area the most are
a. circular folds. b. villi. c. microvilli. d. crypts. e. none of these answers.
Which of the following effectors in NOT innervated by the autonomic nervous system?
A) cardiac muscle B) glands C) skeletal muscle D) smooth muscle
Each of the following statements concerning hair is true except
A) the medulla is the soft core of the hair. B) the cortex of the hair is composed of hard keratin. C) terminal hairs are heavy and more darkly pigmented than other types of hair. D) club hair is hair that has ceased growing. E) scalp hairs grow constantly throughout life.