What is the general effect of hormones produced with thyroglobulin? elevated lev

Question

What is the general effect of hormones produced with thyroglobulin? elevated levels of blood TSH reduced blood calcium levels Bl c) increased blood insulin D) increased cellular metabolism E) none of the above St. The testicles of male mammals are suspended in the scrotum because A) there is not enough room in the pelvic area for the testicles to be housed internally: mperature for sperm production is higher than the normal core body temperature c) the optimum temperature for sperm production is less than the normal core body temperature D) it is easier for the body to expel sperm during ejaculation E) stem cells need a cool environment and sperm require a warmer environment to function 32. What is the main organic molecule digested by the stomach? A) Proteins B) Alcohol C) Carbohydrates D) Lipids E) Water 33. In the pancreas,_ blood levels of glucose. cells secrete insulin, which A) beta; lowers B) alpha; lowers C) alpha; raises D) beta; raises 34. The primary force responsible for air moving into the lungs during inhalation is A) atmospheric vs intrapulmonary pressure gradient B) muscular contraction C) reduced surface tension inside the lungs D) muscular relaxation E) somatic motor nerve signals to the diaphragm 35. Endocrine cells from which of the following locations produce epinephrine and norepinephrine? A) adenohypophysis B) adrenal medulla C) adrenal fascicular layer D) zona reticularis E) chief cells 36. beta-hCG (human chorionic gonadotropin) is detected in greater and greater amounts in th urine with a pregnancy. This hormone surges every other day and causes the nausea a known as morning sickness. The endocrine tissue responsible for producing this hormone is A) myometrium B) endometrium C) placenta D) corpus luteum E) ovary nd vomiti

Explanation / Answer

30. Option A. elevated levels of blood TSH

Explanation: Thyroglobulin (Moleucar weight 660kDa) is a dimeric protein of follicular cells of thyroid gland where thyroid hormone triiodothyronine and tetraiodothyronine are produced. It is stimulated by Thyroid Stimulating Hormone produced by pituitary gland

31. Option C. The optimum temperature for sperm production is less than the normal core body temperature

Explanation: The temperature of Scro_tum is lesser (approximately 2 degrees Fahrenheit lower than body core temperature) which is essential for the normal spermatogenesis

32. Option A. Proteins

Explanation: Proteins are digested in the stomach by pepsin of gastric juice where proteins are broken down to polypeptides

33. Option A. Beta, lowers

Explanation: Insulin is secreted by the Beta cells of islets of langerhans of pancreas in response to the high blood glucose levels and insulin lowers the blood glucose levels

34. Option A. Atmospheric vs Intrapulmonary pressure gradient

Explanation: The main driving force for exchange of gases is due to diffusion as there is pressure gradient between the atmospheric oxygen (160 mmHg) which is higher than the intrapulmonary pressure and leads to movement of oxygen from higher pressure gradient (atmosphere) to lower pressure gradient (lung capillaries)

35. Option B. Adrenal medulla

Explanation: Epinephrine and Norepinephrine are produced by the adrenal medulla and nervous system.

36. Option C. placenta

Explanation: Human chorionic Gonadotropin (HcG) is produced by placenta after implantation and hence used as detector for pregnancy (used in pregnancy detection strips)

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