Human Reproductive Systems Human Reproductive Systems We will

Human Reproductive Systems

Human Reproductive Systems �We will be studying both the male and female reproductive systems. �All males have the same physical body parts for reproduction as other males. All females have the same physical body parts for reproduction as other females. �We will be looking at drawings of the male and female reproductive systems. �We will learn and use accurate terms for male and female body parts – not slang words.

Female Reproductive System

Female: Internal View

Female Internal View �Vagina: �The muscular, hollow, tube-shaped organ that extends from the vaginal opening to the uterus �Functions: � Sexual intercourse � The pathway that a baby takes out of a woman’s body during childbirth � The route for the menstrual blood (the period) to leave the body from the uterus

Female Internal View �Cervix �The part of the uterus that opens into the upper part of the vagina �Has a very small hole that dilates (opens) only when a woman is giving birth �Uterus (womb) �Shaped like an upside-down pear; has a thick lining and muscular walls �Functions: Expands and contracts to accommodate a growing fetus � Helps push the baby out during labor �

Female Internal View �Fallopian tubes �Connects the uterus to the ovaries �Ovaries �Two oval-shaped organs that lie to the upper right and left of the uterus �Produce, store and release eggs into the fallopian tubes (ovulation)

Female: External View

Female External View �The clitoris, a small sensory organ, is located toward the front of the vulva where the folds of the labia join. �The urethra is the canal that carries urine from the bladder to the outside of the body. �The labia are the inner and outer lips that surround the vaginal opening. �The anus is the opening through which solid waste (feces) passes through the body.

Male Reproductive System

Male: Front View

Male Reproductive System �Penis �Made up of spongy tissue that can expand contract �Made up of two parts: � The shaft (the main part of the penis) � The glans (the tip, sometimes called the head) �At the end of the glans is a small slit or opening, which is where semen and urine exit the body through the urethra

Male Reproductive System �Testicles �Produce and store millions of tiny sperm cells �Scrotum �A pouch-like structure outside the body �Helps to regulate the temperature of the testicles, which need to be kept cooler than body temperature to produce sperm

Male Reproductive System �Seminal vesicles are sac-like structures attached to the vas deferens, to the side of the bladder �Vas deferens �A muscular tube that passes upward alongside the testicles �Transports the sperm-containing fluid called semen �The epididymis is a set of coiled tubes (one for each testicle) that connects to the vas deferens.

Male Reproductive System �Prostate gland �Produces some of the parts of semen �Surrounds the ejaculatory ducts at the base of the urethra, just below the bladder �Urethra �The channel that carries the semen to the outside of the body through the penis �The channel through which urine passes as it leaves the bladder and exits the body

Male Reproductive System �The bladder is the organ that collects and stores urine produced by the kidneys. �Foreskin �A fold of skin at the end of the penis covering the glans �Some males have a circumcision, which means that a doctor or clergy member cuts away the foreskin