____________________ ions function as the intracellular signal for contraction
Fill in the blank(s) with correct word
Calcium
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The perichondrium is a layer of dense irregular connective tissue surrounding ________.
A. a blood vessel B. most cartilage C. a bone D. the pericardial cavity E. the brain and spinal cord
Genetic sex, which depends on the combination of sex chromosomes at the time of conception, in turn determines __________ sex
Fill in the blank(s) with correct word
What is the cardiac output in a person with a heart rate of 65 beats/min and a stroke volume of 72 ml/beat?
A. 4,680 mL/min B. 1.1 mL/beat C. 137 mL/min D. 4,680 beats/min E. 4,680 mL/beat
Which is more efficient in propelling intestinal contents along the digestive tract: peristalsis or segmentation? Why?
A) segmentation; because it involves pushing the bolus forward B) segmentation; because it involves mixing and churning C) peristalsis; because it involves pushing the bolus forward D) peristalsis; because it involves mixing and churning E) both segmentation and peristalsis are equally effective at propelling intestinal contents along the digestive tract