Richard has been under great stress and has complained of migraine headaches for weeks. He tried all kinds of drugs, with little effect. When he was at the end of his rope, a friend suggested yoga and meditation
Having nothing to lose, he tried them and after several months, felt like a new person. How could these practices help him?
What will be an ideal response
The practitioner of meditation and biofeedback techniques seems to enter a physiological state of concentration that can reduce sympathetic-induced hypertension. By concentrating on relaxing thoughts, the practitioner can slow heart and respiratory rates. The effects are more widespread than can be explained by parasympathetic influences; the control could be consciously induced.
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Secretion of excess ________ hormone causes acromegaly.
Fill in the blank(s) with the appropriate word(s).
The small intestine has three histologically dictinct regions. Which of the following statements concerning the histological differences in the three regions is true?
(a) Peyer's patches are present only in the ileum (b) goblet cells are present only in the epithelium of the duodenum (c) Brunner glands are located in the duodenum and jejunum but not the ileum (d) lymph follicles are present only in the lamina proprial of the ileum (e) the muscularis muscosae contains three layers of smooth muscle in the ileum and two layers in the duodenum and jejunum.
Which of the following is NOT true about the EEG (electroencephalogram)?
A. The EEG is a field potential generated by the activity of large numbers of neurons. B. During epileptic seizures, the EEG remains normal. C. An evoked potential is a change in the EEG in response to a stimulus. D. Alpha and beta EEG patterns are seen in awake individuals. E. The EEG rhythm slows during drowsiness and sleep.
You are viewing an organ of the respiratory system and note the following tissues: hyaline cartilage plates arranged in a circle, pseudostratified epithelium, and smooth muscle. Identify the organ
A) Bronchus B) Trachea C) Terminal bronchiole D) Alveolar duct