Describe how the secretion of thyroid hormone is regulated through negative feedback
What will be an ideal response?
Stress and/or cold temperatures cause the hypothalamus to secrete thyrotropin-releasing hormone (TRH), which travels to the pituitary gland causing that gland to secrete thyroid-stimulating hormone (TSH). The TSH travels to the thyroid gland where it causes the secretion of thyroid hormones (T3 and T4). These thyroid hormones then have an inhibitory effect on the pituitary gland, causing it to secrete less thyroid hormone. In addition, the thyroid hormones promote activities that help relieve stress and/or increase body temperature, thereby counteracting the original stress. This causes the hypothalamus to secrete TRH.
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Passing through the transverse foramina in the cervical region are the
A. jugular veins. B. vertebral arteries. C. common carotid arteries. D. internal carotid arteries.
In a condition known as pleurisy, there is excess fluid in the pleural space. How would you expect this to affect the process of pulmonary ventilation?
A) Breathing would be labored and difficult. B) It would be easier to expand the lungs on inspiration. C) More air would be forced out during expiration. D) Tidal volume would increase. E) Ventilation would require less energy.
Explain why insulin cannot be administered orally
What will be an ideal response?
The radial pulse can be felt just lateral to the tendon of the
A. flexor carpi ulnaris. B. flexor carpi radialis. C. extensor carpi radialis brevis. D. extensor carpi radialis longus. E. brachioradialis.