Lesson 1 Organ System Overview PDF

Skeletal Cartilages...

Skeletal Cartilages muscles 1 Skin Joint Bones (a) Integumentary System (b) Skeletal System (c) Muscular System Forms the external body covering; Protects and supports body organs; Allows manipulation of the protects deeper tissue from injury; provides a framework the muscles environment, locomotion, and facial synthesizes vitamin D; location of use to cause movement; blood cells expression; maintains posture; cutaneous receptors (pain, pressure, are formed within bones; stores produces heat. etc.) and sweat and oil glands. minerals. Pineal gland Brain Pituitary gland Sensory Thyroid gland receptor (parathyroid glands Spinal on posterior aspect) Heart cord Thymus gland Adrenal glands Nerves Pancreas Testis (male) Blood vessels Ovary (female) (d) Nervous System (e) Endocrine System (f) Cardiovascular System Fast-acting control system of the Glands secrete hormones that Blood vessels transport blood, which body; responds to internal and regulate processes such as growth, carries oxygen, carbon dioxide, external changes by activating reproduction, and nutrient use by nutrients, wastes, etc.; the heart appropriate muscles and glands. body cells. pumps blood. Figure 1.2 The body’s organ systems. (Figure continues on page 6.) 5  Nasal cavity Oral cavity Pharynx Larynx Esophagus Thoracic duct Trachea Stomach Bronchus Small Lymph Left lung intestine nodes Large intestine Rectum Anus Lymphatic vessels (g) Lymphatic System (h) Respiratory System (i) Digestive System Picks up fluid leaked from blood Keeps blood constantly supplied Breaks food down into absorbable units vessels and returns it to blood; with oxygen and removes carbon that enter the blood for distribution to disposes of debris in the lymphatic dioxide; the gaseous exchanges body cells; indigestible foodstuffs are stream; houses white blood cells occur through the walls of the air eliminated as feces. involved in immunity. sacs of the lungs. Mammary glands Kidney Prostate (in breasts) Seminal gland Uterine Ureter vesicles tube Urinary Ovary bladder Uterus Penis Vas Urethra deferens Testis Vagina Scrotum (j) Urinary System (k) Male Reproductive System (l) Female Reproductive System Eliminates nitrogen-containing Overall function of the reproductive system is production of offspring. Testes wastes from the body; regulates produce sperm and male sex hormone; ducts and glands aid in delivery of viable water, electrolyte, and acid-base sperm to the female reproductive tract. Ovaries produce eggs and female sex balance of the blood. hormones; remaining structures serve as sites for fertilization and development of the fetus. Mammary glands of female breast produce milk to nourish the newborn. Figure 1.2 (continued) The body’s organ systems. 6