hormone for maintaining the metabolic rate and body temperature. 3. Thyroid-stimulating hormone (TSH) is Your answer : c. secreted by the posterior pituitary. Correct answer: b. produced in the pituitary gland. 4. An injection of TSH to an otherwise normal animal will cause which of the following? You correctly answered: d. goiter development 5. Thyrotropin-releasing hormone (TRH) is Your answer : c. held at a low plasma concentration by low levels of TSH. Correct answer: a. secreted by the hypothalamus
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Rivera and 4023166: Respiratory Acidosis and Alkalosis Activity 1: Normal Breathing 1. At 20 seconds‚ pH = 7.40 2. At 40 seconds‚ pH = 7.40 3. At 60 seconds‚ pH = 7.40 4. Did the pH level of the blood change at all during normal breathing? If so‚ how? No 5. Was the pH level always within the “normal” range for the human body? Yes 6. Did the PCO2 level change during the course of normal breathing? If so‚ how? No Activity 2a: Hyperventilation –
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Respiratory Acidosis and Alkalosis Activity 1: Normal Breathing 1. At 20 seconds‚ pH = 7.4 2. At 40 seconds‚ pH = 7.4 3. At 60 seconds‚ pH = 7.4 4. Did the pH level of the blood change at all during normal breathing? If so‚ how? The pH did not change during the normal breathing. 5. Was the pH level always within the “normal” range for the human body? Yes it was. 6. Did the PCO2 level change during the course of normal breathing? If so‚ how? No it did not change either. Activity 2a:
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Respiratory Acidosis and Alkalosis Activity 1: Normal Breathing 1. At 20 seconds‚ pH = 7.41 2. At 40 seconds‚ pH = 7.38 3. At 60 seconds‚ pH = 7.39 4. Did the pH level of the blood change at all during normal breathing? If so‚ how? Yes it did. It went down and then back up a little bit. 5. Was the pH level always within the “normal” range for the human body? yes 6. Did the PCO2 level change during the course of normal breathing? If so‚ how? No it did not Activity 2a: Hyperventilation
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4. Discuss the physical and psychological changes associated with normal ageing. How can one minimise pathological ageing? The process of aging has been around as long as life itself. All living organisms pass through three broad stages from conception to death‚ which are maturation‚ maturity and aging. Aging affects everyone because nearly everyone has the potential to grow old and all the societies in which we live have older members (Macdonald‚ 1997). Gerontology is the use of reason to understand
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answer : d. pH and PCO2 will increase. Stop & Think Questions: Were the pH and PCO2 in the normal range? You correctly answered: c. Both pH and PCO2 were in the normal range. What was the effect of returning to normal breathing after hyperventilation? You correctly answered: b. The breathing stopped temporarily to retain carbon dioxide. Experiment Data: Condition Normal Hyperventilation Hyperventilation / Normal Min PCO2 40 24.38 30.62 Max PCO2 40 40 40 Min pH 7.41 7.38 7.38 Max pH 7.41 7.6 7.53
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Activity 1 Metabolism and Thyroid Hormone Part 1 1 Which rat had the fastest basal metabolic rate (BMR)? The normal rat had the faster basal metabolic rate‚ because it was not missing its pituitary gland or its thyroid gland. 2 Why did the metabolic rates differ between the normal rat and the surgically altered rats? How well did the results compare with your prediction? The normal rat has the highest BMR because it has the glands required to stimulate and regulate the release of thyroid hormones
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Exercise 4 Endocrine System Physiology Name Laura Bauer Lab Time/Date Thursday 5:30-7:30 Activity 1 Metabolism and Thyroid Hormone Part 1 1 Which rat had the fastest basal metabolic rate (BMR)? The Normal rat had the fastest BMR. 2 Why did the metabolic rates differ between the normal rat and the surgically altered rats? How well did the results compare with your prediction? ___ The BMRs differed because the surgically altered rats were missing either the Pituitary or Thryoid gland
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The clinical manifestations are pain‚ foot cramps‚ especially of the arch (instep claudication)‚ after exercise and cold sensitivity. Physical signs include intense rubor (reddish- blue discoloration) of the foot and absence of pedal pulse‚ but with normal femoral and popliteal pulses. If the upper extremities are involved‚ the radial and ulnar artery pulses are absent or diminished. As the disease progresses‚ definite redness or cyanosis of the part appears when the extremity is in a dependent position
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