Chromosomes

Two normal parents have 3 children, one a normal girl, one a normal boy and the other boy with hemophilia. If the affected son marries a girl whose father also had hemophilia, what are the overall chances of having a hemophiliac child? A male from India carries an odd trait for hairy ears that is based on the Y chromosome. Assuming he mates with a woman whose father carries that trait, what percentage of daughters will have or carry the trait? What percentage of sons will have or car5ry the trait? A group of traits is being studied for their effects on behavior by researchers. There are 10 total traits being studied. If this combination is as shown below (assuming no linkage), how many... click for more

Advanced physiology

1) A 22- year old man was in a motorcycle accident with resultant neck injuries that led to partial paralysis of the upper and lower limbs. Almost immediately his chest felt heavy and he became dyspneic. His pulmonary values: Vital capacity (supine) = 650 ml Minute ventilation (supine) = 6 L/min Respiratory rate (supine) = 30 b/min PaO2 = 61 mmHg PaCO2 = 47 mmHg a)What nerves and muscles are involved in this case? b)What is causing significantly reduced alveolar ventilation?

Advanced Physiology

1) If the atmospheric pressure is 752 mm Hg, and the partial pressure of nitrogen is 593 mm Hg, the partial pressure of oxygen would be A. 160 mm Hg B. 257 mm Hg C. 159 mm Hg D. 79 mm Hg 2) In nonstrenuous circumstances, after "unloading" oxygen at tissue capillaries, hemoglobin normally remains approximately A. 25% saturated with oxygen B. 50% saturated with oxygen C. 60% saturated with oxygen D. 75% saturated with oxygen E. nearly 100% saturated with oxygen 3) The alveolar cells in the lungs are lined with a layer of water molecules. This layer A. often causes lung collapse due to surface tension B. helps keep the lungs expanded and resists coll... click for more

Endocrine/Reproduction

1. Production of the gonadal sex hormones is A. relatively constant from fetal life to old age B. low until puberty, after which it becomes quite high and remains so until old age C. low until puberty, and remains so until old age D. high during fetal life, low during childhood, high during puberty, and then declines later in life 2. Posterior pituitary hormones A. are produced in the hypothalamus B. travel to the posterior pituitary along the hypothalamo-pituitary portal system C. are called hypophysiotropic hormones D. all of the above 3. Ovulation is induced by a surge of A. LH B. progesterone C. inhibin D. FSH 4. Steroid hormones A. ... click for more

Physiology

A 50 year-old male complained of weakness on the right half of his face, which quickly led to the facial paralysis of this side. He was unable to wrinkle his forehead, smile, show his teeth. He was also unable to close his right eye. Taste perception was distorted over the left anterior portion of the tongue. There was complete recovery of the facial weakness and taste distortion within two months. i) Which cranial nerve is involved? ii) Why it causes paralysis on the right? iii) How would you differentiate this condition from other cranial nerves involvement?