Dissection of human bodies became part of formal medical school coursework in the ________ century.
Fill in the blank(s) with the appropriate word(s).
20th
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While you study blood vessel structure in your dorm room, your roommate prepares to bike to his favorite fishing hole. You absent-mindedly watch as he puts on his bike shorts, which look absurdly small in his hands but stretch easily then snap back to fit tightly. His fishing shirt is a nonstretchy cotton weave that fits loosely, with open mesh panels across the back and armpits for ventilation.
Considering only the basic structural differences in arteries, veins, and capillaries, which of the types of fabrics resemble which vessels, and why? What will be an ideal response?
If the vagal nerves to the heart were cut, the result would be that ________.
A) the heart would stop, since the vagal nerves trigger the heart to contract B) the heart rate would increase by about 25 beats per minute C) the AV node would become the pacemaker of the heart D) parasympathetic stimulation would increase, causing a decrease in heart rate
What is the importance of cytoplasmic bridges formed between spermatocytes?
a. X bearing sperm cannot produce all cell products necessary for survival of the cell. b. Y bearing cells have a greater amount of chromosomes. c. They permit cytoplasmic exchange between the cells. d. All of these.
__________ is the mechanical and chemical breakdown of food for use by the body.
Fill in the blank(s) with the appropriate word(s).