Describe how internal reproductive structures develop. What genetic factors determine whether development proceeds in a male or female manner? What ducts are formed in male and female embryos and fetuses?
What will be an ideal response?
Expression of SRY from the Y chromosome causes Sertoli cells to secrete AMH, which leads to degeneration of the paramesonpheric ducts and continued development of Wolffian ducts to form the epididymis and ductus deferens. In the absence of SRY proteins, mesonephric ducts degenerate and paramesonephric ducts continue to develop helping to form the uterus and uterine tubes.
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Prostaglandins stimulate contractions of the smooth muscle in the reproductive tracts of both genders, thereby helping transport sperm to the site of fertilization in the female oviduct
a. True b. False Indicate whether the statement is true or false
Which of the following minerals is mismatched with its function?
A. Potassium - muscle and nerve function B. Cobalt - erythrocyte production C. Selenium - component of many enzymes D. Zinc - hemoglobin synthesis E. Calcium - bone formation
The scientific discipline that studies the functions of body structures is
A. astronomy. B. anthropology. C. archaeology. D. anatomy. E. physiology.
Mastication
A. increases the surface area of food particles. B. decreases the efficiency of digestion. C. occurs in both the mouth and stomach. D. is never under voluntary control. E. decreases the surface area of food particles.