Organ Systems

part 2

The digestive system is comprised of the oral cavity, esophagus, liver, stomach, small intestine, large intestine, and rectum. It breaks down food into absorbable units that reach cells by way of the blood stream and eliminated indigestible matter as feces.

The nervous system is made of the brain, spinal cord, sensory receptors, and nerves. It perceives stimuli and tells the body to react accordingly by activating muscles or glands.

The endocrine system is made of the pineal gland, pituitary gland, thyroid gland, thymus, adrenal gland, pancreas, ovaries, and testis. It secretes hormones from the glands which regulate things such as growth and reproduction.

The cardiovascular system is made of the heart and blood vessels. The heart pumps blood, which carries oxygen and nutrients to cells and waste products away, through the blood vessels.

The urinary system consists of the kidneys, ureters, urinary bladder,and urethra. It filters and eliminates waste from the body, and regulates water, electrolyte and acid base balance of the blood.

The reproductive system is made of the prostate gland, penis, testis, scrotum, and ductus deferens in males, and the ovaries, uterus, uterine tubes, mammary glands (breasts) and vagina in females. It produces offspring, overall. Testes produce sperm, ovaries produce eggs, and the fertilized egg or fetus develops in the vagina.