The contraction of the arrector pili
A. does not affect the position of the hair relative to the epidermis.
B. pulls the follicle into a more oblique angle in relation to the skin surface
C. pulls the follicle into a more perpendicular position in relation to the skin surface
Answer: C
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The gonads
A. are the male testes and female ovaries, which are homologues. B. produce gametes. C. are dormant until puberty. D. secrete sex hormones. E. All of the choices are correct.
The fetal blood that passes through the ductus venosus is relatively
A. low in oxygen and nutrients. B. low in oxygen but high in nutrients. C. high in oxygen and nutrients. D. high in oxygen but low in nutrients.
Which of the following is NOT a function of the urinary system?
introduction of plasma proteins into blood plasma removal of organic waste products from body fluids elimination of waste into the environment homeostatic regulation of the volume and solute concentration of blood plasma
The median space in the thoracic cavity is called the
A. mediastinum. B. pericardial cavity. C. hypochondriac space. D. pleural cavity. E. peritoneal cavity.