Explain the structural characteristics that allow you to visually distinguish among skeletal muscle, smooth muscle, and cardiac muscle tissue
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Although cells in both skeletal muscle tissue and cardiac muscle tissue are striated, look for intercalated discs and branched cells in the cardiac muscle cells to distinguish between these two tissues. Furthermore, skeletal muscle cells are multinucleate while cardiac muscle cells are uninucleate. Cells in smooth muscle tissue lack striations, distinguishing it from skeletal and cardiac muscle tissues. Like the cells in cardiac muscle tissue, smooth muscle cells are uninucleate. However, smooth muscle tissue cells do not branch nor do they possess intercalated discs.
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The lymphatic capillaries are ________.
A) more permeable than blood capillaries B) less permeable than blood capillaries C) as permeable as blood capillaries D) completely impermeable
Which of these is most responsible for "light adaptation"--the process by which we only gradually become able to see objects in a brightly lit place after being in the dark?
A. Cone receptors are very hyperpolarized in the dark, and they must be exposed to bright light for awhile before they will depolarize. B. Rhodopsin is quickly inactivated in the presence of bright light so rods become unresponsive, and the higher-acuity cones then become the main detectors of vision. C. Because rods are more sensitive to light than cones, they gradually become extremely activated in bright light. D. Cones and rods are stimulated equally, leading to difficulties in interpreting the sensory inputs to the brain. E. Rhodopsin is not activated by colored light, and the lack of stimulation causes rods to gradually depolarize when we are exposed to bright light.
Tools typically used in biomechanics to collect kinematic quantities include?
A. Electromyography B. Force plates C. Motion Capture Systems D. Hand Grip Dynamometers
The kidney has six roles in homeostasis. Please describe them
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