Intro to Anatomy – Lesson 3 TSWBAT to identify the 11 body systems and define the functions and components of each system.

Organ Systems of the Body - Skeletal Protects body organs/tissues Provides the framework for muscles Produces blood cells Stores minerals (calcium) Composed of: bones, cartilage and ligaments

Organ Systems of the Body – Nervous Detects changes Stimulates muscles and glands Receives and interprets sensory information Composed of: the brain, spinal cord, sense organs and nerves

Organ Systems of the Body - Lymphatic Return tissue fluid to the blood Carries certain absorbed food molecules Defends against infection and diseases Composed of: thymus, spleen, lymph nodes, and lymphatic vessels

Organ Systems of the Body - Muscular Provides movement Maintains posture Produces heat Composed of: muscles and tendons

Organ Systems of the Body- Integumentary Protects tissues Helps regulate body temperature Provides sensory information Composed of: the skin, sweat glands, hair, and nails

Organ Systems of the Body - Digestive Receive, break down, and absorb food Eliminates unabsorbed material Composed of: mouth, tongue, teeth, salivary glands, pharynx, esophagus, stomach, liver, gallbladder, pancreas, small and large intestines

Organ Systems of the Body – Endocrine System Not connected anatomically in the same way that parts of other organ systems are. Controls metabolic activities of body structures Composed of: Glands that secrete hormones - Pineal gland, Pituitary gland, Thyroid gland, Thymus gland, Adrenal gland, Pancreas, Testis (male), Ovary (female)

Organ Systems of the Body - Respiratory Intake and output of air Exchange of gases between air and blood Composed of: the nasal cavity, sinuses, pharynx, trachea, bronchi, larynx and lungs

Organ Systems of the Body - Cardiovascular Moves blood through blood vessels and transports substances throughout the body Composed of: the heart, arteries, capillaries, and veins

Organ Systems of the Body- Urinary Removes wastes from blood Maintains water and electrolyte balance Stores and transports urine Organ Systems of the Body- Urinary Composed of: kidneys, ureters, urinary bladder, and urethra

Organ Systems of the Body Female Reproductive Produce and maintain egg cells Receive sperm cells Support development of embryo and function in birth process Composed of: ovaries, uterine tubes, uterus, vagina, clitoris, vulva

Organ Systems of the Body Male Reproductive Produce and maintain sperm cells Transfer sperm cells into female reproductive tract Composed of: scrotum, testes, epididymis, seminal vesicles, prostate gland, urethra, penis

System Cooperation Body systems must work together for humans to function properly: EX #1 – Integumentary system & Skeletal System…The skin protects all organs & bones, and also produces vitamin D. Vitamin D is used for proper absorption of calcium. Calcium is needed for proper bone growth/development. Not enough Vitamin D, not enough Calcium absorbed  weak/broken bones!

EX #2: Respiratory system & Circulatory System Cooperation EX #2: Respiratory system & Circulatory system: Lungs take in oxygen in exchange for carbon dioxide. Alveoli in the lungs give oxygen to red blood cells (hemoglobin) to carry to all parts of the body for respiration. If alveoi are affected, not enough oxygen is taken in and respiration slows  decrease in the amount of energy produced

Organ Systems Don’t Work Alone The respiratory system takes in oxygen and removes waste gases. The cardiovascular system is responsible for delivering the oxygen to all parts of our bodies.

Organ Systems Interrelationships Nutrients and oxygen are distributed by the blood Metabolic wastes are eliminated by the urinary and respiratory systems Figure 1.2

Create Want Ad CHOOSE A BODY SYSTEM  WRITE EITHER A “FOR SALE” OR “WANTED TO BUY” AD FOR THAT SYSTEM.  AD MUST INCLUDE PURPOSE/FUNCTION AND PARTS OF THE SYSTEM.  WRITE IN AD FORMAT (25 +/- WORDS IN LENGTH) Grading: Content = 15 pts (Purpose, Function & Parts); Creativity = 5 pts

Survival Need or Necessary Life Function? Metabolism Nutrients Reproduction Oxygen Water Maintaining Boundaries Excretion Normal Body Temperature Responsiveness Atmospheric Pressure Movement Growth Digestion