Ms. Tomaganuk has mild hypothermia, and her low body temperature causes her to shiver uncontrollably. Shivering is a physiological response that reestablishes temperature homeostasis. This is one example of a negative feedback response pathway. Label the components of the shivering negative feedback response pathway. Bady temperature below 98.6°F control center Answer Bank Nerve cells in the skin sensor Temperature regulatory center in the brain stimulus effector Muscles help contact us terms of use privacy policy about us careers t Hint x Give Up? Resources 500 Match each example to the appropriate characteristic of life. Excretion Reproduction Metabolism Responsiveness Maintaining boundaries Answer Bank defecation moving the hand from a hot surface the skin a cell divides into two identical cells complex molecules synthesized from simpler molecules

______tissue detects and integrates information about changes and controls a. Muscle b. Nervous c. Connective d. Epithelial

________ detects and integrates information about changes and controls responses to those changes. a. Epithelial tissue c. Muscle tissue b. Connective tissue d. Nervous tissue

Watch this video (http://openstaxcollege.org/l/musctissue) to learn more about muscle tissue. In looking through a microscope how could you distinguish skeletal muscle tissue from smooth muscle?

Stimulation of the heat-loss center causes ________. blood vessels in the skin to constrict breathing to become slow and shallow sweat glands to increase their output All of the above

Why do you think a person is able to perform anaerobic exercise (such as lifting and holding a heavy weight) only briefly but can sustain aerobic exercise (such as walking or swimming) for long periods? (Hint: Muscles have limited energy stores.)

________ tissues have closely linked cells and one free surface. a. Muscle b. Nerve c. Connective d. Epithelial

Watch this short video (http://openstaxcollege.org/l/facialnerve) to see an examination of the facial nerve using some simple tests. The facial nerve controls the muscles of facial expression. Severe deficits will be obvious in watching someone use those muscles for normal control. One side of the face might not move like the other side. But directed tests, especially for contraction against resistance, require a formal testing of the muscles. The muscles of the upper and lower face need to be tested. The strength test in this video involves the patient squeezing her eyes shut and the examiner trying to pry her eyes open. Why does the examiner ask her to try a second time?

The ________ exocrine gland stores its secretion until the glandular cell ruptures, whereas the ________ gland releases its apical region and reforms. holocrine; apocrine eccrine; endocrine apocrine; holocrine eccrine; apocrine

Nerve impulses first stimulate a skeletal muscle fiber at _______. a. T tubules b. sarcomeres c. neuromuscular junctions d. actin binding sites