The Endocrine and Reproductive systems The Endocrine System

The Endocrine and Reproductive systems

The Endocrine System n Function … n Broadcast messages throughout the body n Made up of … n n Glands that release their messages throughout the body Endocrine glands release the hormones directly into the bloodstream

Hormones n What are they? n Chemicals that travel through the blood stream and affect the activities of other cells.

How Hormones Work Hormones get released into the blood stream by endocrine glands n Hormones then attach to specific receptors on specific cells n Target cells – cells that have receptors for a particular hormone n

Control of the Endocrine system n It is controlled by a feedback mechanism that functions to maintain homeostasis n Just like a thermostat in your house

The Reproductive system n Function … n Produces, stores, and releases specializes sex cells known as gametes n Puberty begins when the hypothalamus signals the pituitary to produce FSH and LH both hormones that affect the gonads

The Male Reproductive system Made up of … n testes, epididymis, vas deferens, urethra, and the penis n Function … n n Produce and deliver sperm

The Female Reproductive system Made up of … n Ovaries, fallopian tubes, uterus, and the vagina n Function … n n To produce eggs, prepare the female’s body to nourish a developing embryo