When a baby suckles at its mother's breast the stimulus at the breast is sent to the mother's brain (a region called the hypothalamus)
The brain responds by releasing hormones to stimulate the production and the ejection of milk from the breast. This helps the newborn to receive nourishment and encourages more suckling. This example is best described as a ________.
A) negative feedback
B) necessary life function
C) loss of homeostasis
D) positive feedback
Answer: D
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Motor neurons are sometimes inhibited by
A) muscle spindle organs. B) joint receptors. C) Golgi tendon organs.
The layer of the digestive tube that contains blood vessels, lymphatic nodes, and nerves is the ________
A) None of the listed responses is correct. B) adventitia C) serosa D) submucosa
If you stand on tiptoes to reach something high, you are performing ________ at the ankle.
A. plantar flexion B. abduction C. dorsiflexion D. eversion E. opposition
This figure shows the muscles of the posterior trunk. What muscle does number 3 indicate?
A. Latissimus dorsi B. Trapezius C. Rhomboid major D. Infraspinatus E. Supraspinatus