Which of the following is a function of astrocytes?
A. They circulate the cerebrospinal fluid.
B. They produce cerebrospinal fluid.
C. They phagocytize tissue debris.
D. They help form the blood-brain barrier.
E. They form myelin in the CNS.
D. They help form the blood-brain barrier.
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The activity of the nervous system is dependent upon
A) cellular connections. B) large amounts of energy. C) a proper intracellular environment. D) a proper extracellular environment. E) All of the answers are correct.
A cartilaginous joint that permits slight movement is (a) ________.
A) symphysis B) synovial joint C) synostosis D) synchondrosis E) gomphosis
Which of the following muscle groups contract during forced expiration?
a. external intercostals b. sternocleidomastoid c. rectus abdominus d. diaphragm
The two hormones released from the posterior pituitary are
A. oxytocin and antidiuretic hormone. B. prolactin and vasopressin. C. follicle-stimulating hormone and luteinizing hormone. D. thyrotropin-releasing hormone and corticotropin-releasing hormone. E. prolactin and growth hormone.