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WGU - C458 Health Fitness Wellness - Unit 1 Module 1
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WGU - C458 Health Fitness Wellness - Unit 1 Module 1
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WGU - C458 Health Fitness Wellness -Unit 1 Module 1
Key structures in skeletal system - -bones, joints, cartilage, ligaments,
tendons
-4 types of bones - -long, flat, short, irregular
-3 types of joints - -immovable, slightly movable, freely movable
-description & location of cartilage - -tough but flexible covering at bone
ends and joints to reduce friction; also shape and support at nose, ears,
windpipe
-2 types of connective tissue - -ligaments and tendons
-ligament function - -Connects BONE to bone
-tendon function - -Connects MUSCLE to bone
-3 types of muscle - -smooth (organs), striated (movement), cardiac
(combination only in heart)
-2 main divisions of nervous system - -central (brain & spinal column) and
peripheral (all others)
-Respiratory System - key structures / organs - -Upper tract:
1. Nasal Cavity
2. Pharnyx (throat)
3. Larnyx (voice box)
Lower tract:
1. Trachea (windpipe)
2. Primary Bronchi (bronchial tree)
3. Lungs
-respiration process - -oxygen IN => air > air passages > lungs > alveoli
(air sacs in lungs) > capillaries > blood
-key structures of cardiovascular system - -1. Heart (4 chambers: 2 upper
atrium, 2 lower ventricle; right side handles deoxygenated blood, left side
handles oxygenated blood)
Blood vessels:
2. Arteries/aorta (AWAY from heart)
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