On a laboratory exam, you are asked to identify various muscle tissues through the microscope. Describe the characteristics you will use to differentiate among the three types of muscle tissue
What will be an ideal response?
First, look for light and dark bands known as striations to help you differentiate between striated muscle tissue (cardiac and skeletal) and non-striated muscle tissue (smooth). To determine the difference between the two types of striated muscle tissue, look for long, multinucleated cells that are arranged parallel to one another in skeletal muscle tissue. By contrast, cardiac muscle cells are shorter and wider, branched, and generally have only one or two nuclei. Intercalated discs are unique to cardiac muscle cells. Finally, non-striated muscle tissue is smooth muscle tissue. Smooth muscle cells are long and flattened with two pointed ends (spindle-shaped). These cells often have a single, centrally located oval nucleus.
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Which brain area and function are NOT correctly paired?
a. cerebellum: skilled voluntary activity b. brain stem: sense of fear c. thalamic region: crude awareness of sensation d. cerebral cortex: personality traits e. amygdala: emotional memories
Where would you measure the shell temperature of a patient?
A. Their thoracic cavity B. Their skin C. Their rectum D. Their abdominal cavity
Gigantism and acromegaly occur as a result of
A) overproduction of parathyroid hormone. B) insufficient secretion of epinephrine. C) overproduction of growth hormone. D) overproduction of mineralocorticoids. E) insufficient production of estrogen.
Growth hormone, via IGF-1, promotes the lengthening of long bones by stimulating chondrocyte division on the diaphysis side of an epiphyseal plate
Indicate whether the statement is true or false