locomotion. i. adaptations a.protists – single celled organisms 1.pseudopod – cell cytoplasm...
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![Page 1: Locomotion. I. Adaptations A.Protists – single celled organisms 1.Pseudopod – cell cytoplasm flows into “fake foot” and organism moves 2.Cilia a.short](https://reader036.vdocuments.site/reader036/viewer/2022062722/56649f385503460f94c5448b/html5/thumbnails/1.jpg)
Locomotion
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I. Adaptations A. Protists – single celled organisms
1. Pseudopod – cell cytoplasm flows into “fake foot” and organism moves
2. Cilia a. short hair-like organelles
b. cover outer surface of cell
c. wave back and forth to move cell through water
3. Flagellum a. long, hair-like organelles
b. act like whip to push/pull cell through water
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I. Adaptations
Flagella
Pseudopod
Cilia
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II. Structure of Human A. Bones
1. Skeleton mainly made of bones of different sizes
2. Hard and rigid, provide support and protection
3. Muscles attach to bones 4. Bones act as levers at joints 5. Produce red and white blood cells in
marrow of long bones
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II. Structure of Human
B. Cartilage 1. Flexible, fibrous, elastic connective tissue
2. Birth – skeleton = cartilage then gets replaced by bone
3. Found at ends of ribs, between vertebrae, ends of bones, nose, ear and trachea
4. Cushioning and flexibility at joints
5. Support and pliability in nose and ears
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II. Structure of Human
C. Joints 1. Allow mvmt of bones where they connect
2. Typesa. Hinge – move back and forth (elbow, knee)
b. Ball and Socket – circular mvmt (shoulder and hip)
c. Pivot – half circle (neck)
d. Immovable – skull
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III. MusclesA. Can contract and
shorten
B. Types 1. Skeletal
a. voluntary and attached to bones
b. looks striped (striated)
c. contraction controlled by nervous system
d. operate in pairs, one extends and other flexes (tricep vs. bicep)
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III. Muscles
2. Smooth A. involuntary, found in digestive organs and
arteries
B. does NOT have stripes (striations)
3. Cardiac A. found ONLY in heart
B. appears striated
C. involuntary
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Smooth Muscle
Skeletal Muscle
Cardiac Muscle
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III. Muscles
C. Tendons 1. attach muscles to bones
2. tough, INELASTIC cords
3. “Muscles TEND to be ripped from bones.”
D. Ligaments 1. connect bones together
2. tough, ELASTIC cords
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Tendon
Ligament
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IV. Disorders
A. Arthritis 1. inflammation
of joints
2. painful and difficult mvmt
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IV. Disorders
B. Tendonitis 1. inflammation of tendon
where it attaches to bone
2. occurs commonly in athletes