Notes Intro to Human Organ Systems 518 Bio
Notes: Intro to Human Organ Systems 5/18 Bio. Ed. Online Bio. Ed
Levels of Organization in the Body n Cells n n n Tissues- groups of the same type of cell n Epithelial (skin), connective (blood), muscular, nervous (nerves) Organs- groups of tissues perform specialized functions n Ex: stomach, liver, heart Organ Systems n Ex: digestive and circulatory systems Bio. Ed Online www. Bio. Ed. Online. org
n Homeostasis: Regulating the Internal Environment Regulation of organism’s internal environment to maintain conditions for survival n Ex: temperature, p. H, amount of water, O 2, CO 2 n Negative Feedback- slows down or stops a body process n Ex: sweating to keep body temp. down Positive Feedback- amplifies a body process Ex: stomach releases enzymes, that make it release more enzymes Bio. Ed Online www. Bio. Ed. Online. org
Human Organ Systems n Skeletal n Excretory n Muscular n Reproductive n Circulatory n Nervous n Immune n Endocrine n Respiratory n Integumentary n Digestive Bio. Ed Online www. Bio. Ed. Online. org
Human Organ Systems Bio. Ed Online n Digestive System n Circulatory System n Excretory System n Nervous System n Respiratory System n Reproductive System www. Bio. Ed. Online. org
Which organ belongs in each organ system? Bio. Ed Online n Digestive System n Circulatory System n Excretory System n Nervous System n Respiratory System n Reproductive System www. Bio. Ed. Online. org
Which organ belongs in each organ system? Bio. Ed Online n Digestive System n Circulatory System n Excretory System n Nervous System n Respiratory System n Reproductive System www. Bio. Ed. Online. org
Which organ belongs in each organ system? Bio. Ed Online n Digestive System n Circulatory System n Excretory System n Nervous System n Respiratory System n Reproductive System www. Bio. Ed. Online. org
Which organ belongs in each organ system? Bio. Ed Online n Digestive System n Circulatory System n Excretory System n Nervous System n Respiratory System n Reproductive System www. Bio. Ed. Online. org
Which organ belongs in each organ system? Bio. Ed Online n Digestive System n Circulatory System n Excretory System n Nervous System n Respiratory System n Reproductive System www. Bio. Ed. Online. org
Which organ belongs in each organ system? Bio. Ed Online n Digestive System n Circulatory System n Excretory System n Nervous System n Respiratory System n Reproductive System www. Bio. Ed. Online. org
Digestive System Receives food; breaks it down to be absorbed by cells. Mouth Pharynx Esophagus Liver Stomach Large Intestine Small Intestine Villi Bio. Ed Online www. Bio. Ed. Online. org
Circulatory System Transports nutrients, gases, wastes, water, hormones, distributes heat Aorta Pulmonary artery Left atrium Mitral Valve Left Ventricle Bio. Ed Online www. Bio. Ed. Online. org
Excretory System Removes waste from the body (toxic chemicals, excess water, CO 2 + salts). Human Urinary System Diagram Nephron Kidney Ureter Urinary Bladder Urethra Bio. Ed Online www. Bio. Ed. Online. org
Nervous System Controls and coordinates functions throughout the body. Dendrite Cell body Myelin sheath Axon Node of Ranvier Axon terminals Human Neuron Diagram Neurons are specialized cells that transmit impulses throughout the body. Bio. Ed Online www. Bio. Ed. Online. org
Diagram of Human Brain Cerebrum Thalamus Hypothalamus Midbrain Pons Corpus callosum Cerebellum Medulla oblongata Spinal cord Bio. Ed Online www. Bio. Ed. Online. org
Respiratory System Exchanges gas (O 2 and CO 2) between an organism (blood) and the environment (air) Nasal Passage Pharynx Larynx Trachea Bronchioles Bronchus Alveoli Bio. Ed Online www. Bio. Ed. Online. org
Reproductive System Produces gametes and supports development of fetus. Bio. Ed Online www. Bio. Ed. Online. org
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