Describe the events of the relaxation period of a muscle twitch
What will be an ideal response?
During relaxation, tension decreases as calcium ions are pumped back into the sarcoplasmic reticulum (SR) for storage. Tropomyosin blocks the active sites on actin and the muscle relaxes.
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Your car breaks down along the highway on a cold winter afternoon. As you wait for help to arrive, the temperature drops significantly inside the car
Describe two involuntary adjustments an adult body will make in order to maintain core body temperature. What will be an ideal response
Conscious interpretation of external stimuli
a. is sensation. b. rarely occurs. c. is perception. d. is processed in the diencephalon. e. none of these answers.
In ______, a cell increases the number of hormone receptors and becomes more sensitive to the hormone
A. amplification B. positive feedback C. down-regulation D. up-regulation
To tip the soles of the feet medially, so they face each other, requires ________. Tipping them out laterally so they face away from each other is ________
A) medial excursion; lateral excursion B) dorsiflexion; plantar flexion C) opposition; reposition D) retraction; protraction E) inversion; eversion