Samara is an astronaut in deep space away from gravity. How could her urine move away from the kidneys and to the bladder in such a situation?
A) skeletal muscle movements
B) peristalsis
C) the Valsalva maneuver
D) bladder suction pressure
B
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The role of a sphincter is to
a. control the passage of materials. b. create a churning motion. c. propagate peristalsis. d. absorb excess water from feces. e. do more than one of these
Respond to statements 104–108 in reference to the four source
tissues of plant roots listed below. a. primary meristems b. primary tissues c. pericycle d. vascular cambium M 104. This tissue gives rise to epidermis and cortex. D 105. This tissue gives rise to protoderm and procambium. D 106. This tissue gives rise to ground meristem. M 107. This tissue gives rise to cork cambium. D 108. This tissue gives rise to secondary phloem and xylem.
Where would you find smooth muscle tissue in your body?
A) in your heart B) in the walls of your stomach C) attached to bones D) None of the above is correct.
Unlike other blood cells, certain types of ________ are not confined to the bloodstream, but instead can migrate out into the fluid surrounding cells.
A. leukocytes B. platelets C. thrombocytes D. erythrocytes