5. Where are sperm stored while they mature? 6. When descending, what do the tes

Question

5. Where are sperm stored while they mature? 6. When descending, what do the testes travel through to get to the scrotal sacs? 7. What accessory gland for reproduction in human males is inferior (posterior) to the urinary bladder? 8. What female reproductive structures transport eggs to the location where embryos/ fetuses develop? 9. Where, in a pig, are the embryos/fetuses located during development? 10. female reproductive structure produces sex What 11. What respiratory structure has cartilaginous rings that keep the airway open? 12. What does food travel through to enter the duodenum when leaving the stomach? 13. What is the tissue surrounding the heart called? 14. What does blood pass through when it goes from one capillary bed to another without hormones? ???? ??? ?? ??? passing through the heart?

Explanation / Answer

Question 5: The correct answer is Epididymis.

Explanation: Sperms are produced by the process called spermatogenesis within the seminiferous tubules. Then they are matured in the epididymis. The epididymis is a comma-shaped organ that lies between the posterior border of each testis and it stores mature sperm.

Question 6: The correct answer is the inguinal canal.

Explanation: The testes begin their development high in the abdominal cavity. Shortly after birth or during the last two months before birth, they descend through the inguinal canal into the scrotal sacs.

Question 7: The correct answer is Seminal vesicles.

Explanation: The paired seminal vesicles are paired saccular glands posterior to the urinary bladder. The fluid from the seminal vesicles contains fructose, which is the energy source for the sperm.

Question 8: The correct answer is Oviducts or fallopian tubes.

Explanation: Females have two oviducts, that extend laterally from the uterus. The fallopian tubes are about 12 cm long and carry eggs from the ovaries to the uterus, where embryos develop.

Question 9: The correct answer is the uterus.

Explanation: The migration of embryos takes place to the uterus to begin the developmental process during the first one or two days after breeding.

Question 10: The correct answer is ovaries.

Explanation: At puberty, when the ovaries and uterus are mature enough to respond to hormonal stimulation, certain stimuli cause the hypothalamus to start secreting gonadotropin-releasing hormone. This hormone enters the blood and goes to the anterior pituitary gland where it stimulates the secretion of FSH and LH. These hormones affect the ovaries to secrete estrogen and progesterone[female sex hormones].

Question 11: The correct answer is the trachea.

Explanation: The trachea, through which air enters into the lungs and esophagus. It has C-shaped hyaline cartilage rings to keep the airway open.

Question 12: The correct answer is the pyloric sphincter.

Explanation: The stomach has four main regions: the cardia, fundus, body, and pylorus. The pylorus ends at the pyloric sphincter. the pyloric sphincter acts as a barrier between the stomach and the upper part of the small intestine, the duodenum. Therefore, food travels through pyloric sphincter to enter duodenum when leaving the stomach.  

Question 13: The correct answer is the fibrous pericardium.

Explanation: Pericardium is a tough sac which surrounds and protects the heart. It consists of an outer fibrous pericardium and an inner serous pericardium. Fibrous pericardium is composed of dense connective tissues and it surrounds the heart.

Question 14: The correct answer is the hepatic portal vein.

Explanation: The hepatic portal circulation carries venous blood from the gastrointestinal organs and spleen to the liver. It is a portal system that begins and ends in capillaries. A vein that carries blood from one capillary bed to another is called a portal vein.

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