What is the primary function of any serous membrane?
A) It covers the outer surface of the body.
B) It lines joint cavities and produces fluid within a joint.
C) It lines cavities that communicate with the exterior, including the digestive, respiratory, reproductive, and urinary tracts.
D) It attaches muscles to the skeleton.
E) It minimizes friction between the opposing surfaces when an organ moves or changes shape.
E) It minimizes friction between the opposing surfaces when an organ moves or changes shape.
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Which of these are functions of the Golgi apparatus?
A. Digestion of engulfed bacteria and using oxygen to generate ATP B. Modifying proteins synthesized on free ribosomes and allowing the distribution of modified proteins throughout the cell in vesicles C. Modifying proteins synthesized on free ribosomes and storing calcium ions D. Synthesizing lipids and intracellular storage of calcium ions E. Modifying proteins synthesized on ribosomes associated with granular endoplasmic reticulum and allowing the distribution of modified proteins throughout the cell in vesicles
Early in the development of skin, ectoderm becomes
A. periderm and mesoderm becomes mesenchyme. B. mesenchyme and endoderm becomes periderm. C. the vernix caseosa and mesoderm becomes the stratum basale. D. perichondrium and mesoderm becomes the vernix caseosa.
During the menstrual phase of the uterine cycle,
a. a new ovarian follicular phase is beginning. b. estrogen and progesterone levels reach their lowest concentration. c. vasoconstriction of the uterine vessels occurs in response to release of a uterine prostaglandin. d. the corpus luteum degenerates. e. all of these answers.
Which of the following is true concerning the female reproductive system?
A. It can support the development of an embryo. B. It produces female sex cells. C. It transports the female sex cells. D. All of the choices are correct.