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The Systems of the Human Body • Can you guess how many different system make up the Human Body? • Well….the correct number is 11!! 11 different systems all working together for you to function. • How many do you know out of those 11? • We will go over all 11 in today’s lecture! Levels of Organization • Lets review…What are the levels of organization within a single human body?? • Atoms/Molecules • Cells • Tissues • Organs • Systems • Organisms/Individual Integumentary System Integumentary System Integumentary System • Skin, hair, nails, sweat glands, and sebaceous glands. • Protect underlying tissue, help regulate temp, sensory receptors, and synthesize certain products. Integumentary System •Bones, ligaments, tendons, and cartilage. • Provides frameworks, protective shield for softer tissue, attachment for muscles, and act together with muscles for movement • Tissue within the bones produce blood cells, store inorganic salts. MUSCULAR SYSTEM MUSCULAR SYSTEM • All muscles… Smooth, cardiac, and skeletal.. • Force for body movement, help maintain posture, are the main source of body heat. • Aids in circulation of blood and food throughout the body. NERVOUS SYSTEM NERVOUS SYSTEM • Brain, spinal cord, nerves, and sense organs. • Nerve cells send nerve impulses • Specialized sensory receptors. • Some nerves receive/send impulses • Some carry impulses from the brain or spinal cord to muscles NERVOUS SYSTEM • The basic unit of the nervous system are neurons. • There are 3 types: sensory, motor, and interneurons! ENDORCRINE SYSTEM ENDORCRINE SYSTEM • Function: Controls growth, development, and metabolism. • Maintains Homeostasis • ORGANSPituitary, thyroid, parathyroid, and adrenal glands, pancreas, ovaries, testes, pineal gland, and thymus gland CARDIOVASCULAR SYSTEM CIRCULATORY SYSTEM • Includes heart, arteries, veins, capillaries, and blood • Heart-pump that forces blood through blood vessels. • Blood- carries oxygen from lungs and nutrients from digestive organs to all body cells CIRCULATORY SYSTEM • These are red blood cells! • They are the most numerous cells in the body. • These cells transport oxygen. • The cells actually have no nuclei. • They live in the human body for about 120 days! • Heart-pump that forces blood through blood vessels. • Blood- carries oxygen from lungs and nutrients from digestive organs to all body cells Lymphatic/Immune System Lymphatic/Immune System • Function: Helps to protect the body from disease • Collects fluid lost from blood vessels & returns the fluid to the circulatory system. • Structures: White blood cells, thymus, lymph nodes, lymph vessels Digestive System Digestive System • Includes: Mouth, tongue, teeth, salivary . glands, pharynx, esophagus, stomach, liver, gallbladder, pancreas, small and large intestine • Breaks down food to similar forms that can pass through cell membranes to be absorbed. Digestive System • Materials not absorbed are transported back outside the body. (Primarily the job of your colon) • Certain digestive organs produced hormones and function as part of the endocrine system. The Respiratory System The Respiratory System • Includes: Nasal cavity, pharynx, larynx, trachea, bronchi, and lungs • Function: Takes air in and out and exchanges gases between blood and the air. (O2 in and CO2 out ) Excretory/Urinary System Urinary System Excretory/Urinary System • Primarily includes kidney, ureters, urinary bladder, and uretha • Some resources include lungs & skin • Kidneys remove wastes from blood and assist in maintaining the body’s water and electrolyte balance • Product is urine Reproductive System Reproductive System Female • Ovaries, uterine tubes, uterus, vagina, clitoris, vulva • Function: Produce and maintain egg cells, receive sperm cells, support development of an embryo and function in birth process Reproductive System Male • Scrotum, testes, epididymides, vasa deferentia, seminal vesicles, prostate gland, bulbourethral glands, urethra, and penis • Function: Produce and maintain sperm cells, transfer sperm cells into female reproductive organs.