Stimulation of the macula densa cells
a. results in vasodilation of the afferent arteriole
b. results in vasoconstriction of the afferent arteriole
c. increases GFR
d. causes all of the above
e. causes only a and c
B
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Which of the following can contribute to the resultant linear velocity of a projectile at release?
A. tangential acceleration B. radial acceleration C. both A and B D. none of the above
Match each of the terms with the correct definition, description, or function.
a. diaphysis b. epiphyses c. periosteum d. endosteum e. medullary cavity f. osteoclast g. osteoblast h. canaliculi i. lacuna j. epiphyseal plate k. diarthrotic l. hematopoiesis m. synarthrotic n. articulations o. amphiarthrotic 1. _____ Bone-forming cells 2. _____ Hollow shaft of the long bone 3. _____ A bone can grow as long as this remains 4. _____ Thin layer of connective tissue that lines the medullary canal 5. _____ Small canals that carry nutrients to bone cells 6. _____ Tough connective tissue surrounding the shaft of long bones 7. _____ Hollow part of the bone where marrow is stored 8. _____ Bone-resorbing cells 9. _____ Small spaces in the bone matrix where bone cells are located 10. _____ Ends of long bones 11. _____ Type of joint that allows no movement 12. _____ Refers to the process of blood cell formation 13. _____ Type of joint that allows for free movement 14. _____ Another term for joints 15. _____ Type of joint that allows for slight, limited movement
A motor unit is ________
A) all the axons of nerve cells that innervate a muscle B) a single motor neuron and all the muscle cells it innervates C) a period of time during muscle contraction D) a group of linked muscle cells
Stretch reflexes
A. are learned voluntary responses. B. aid in maintaining proper posture. C. prevent muscles from being damaged by excessive tension. D. cause the removal of limbs from painful stimuli. E. prevent falling.