According to the University of Rochester Medical Center, the primary functions of gonads in men and women are to secret hormones and to produce sperm and ova. In men, the gonads are the testes, and in women, the gonads are the ovaries. The gonads are considered endocrine glands because they release hormones.Know More
The University of Rochester Medical Center states that the male gonads are responsible for releasing the male sex hormone testosterone. Testosterone helps the male body to mature its skeletal and muscular system, develop the reproductive organs, enlarge the larynx, grow body hair and increase the male sex drive. Testosterone is responsible for the development of male characteristics. The testes also produce and release sperm for sexual reproduction. Testosterone begins to work shortly after birth, tapers off during childhood and then continues to produce regularly from puberty throughout adulthood.
The University of Rochester Medical Center explains that the female gonads secrete estrogen and progesterone. Estrogen facilitates puberty, fat storage and the development of the uterus and vagina. Progesterone thickens the lining in the uterus to prepare for pregnancy. Both progesterone and estrogen control fertility and the menstrual cycle. The ovaries produce and release the ova, or egg, for sexual reproduction.Learn more about Organs
Intestinal villi are small, finger-like projections that protrude from the walls of the small intestine. The villi increase the absorptive surface of the intestine and ensure efficient absorption of nutrients. The villi have microvilli projecting from their outer epithelial walls.Full Answer >
The main function of the digestive system is to convert food to energy and eliminate waste. The human digestive system is made up of several parts, including the mouth, esophagus, stomach, small and large intestines, pancreas, liver, gallbladder, rectum and anus.Full Answer >
The function of the pharynx is to transfer food from the mouth to the esophagus and to warm, moisten and filter air before it moves into the trachea. The pharynx is a part of both the digestive and respiratory systems.Full Answer >
The function of the iris is to control light levels in the eye. The round, black dot in the center of the iris is called the pupil.Full Answer >