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Biology' > Chapter 44?? > Flashcards

Chapter 44?? Flashcards

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AP® Biology flashcards Biology 101 flashcards
0
Q

What are three types of skeletons?

A

Ends . . Eco . . Hydrostatic

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1
Q

Structures that serve one or more functions related to support, protect, and in locomotion

A

Skeleton

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2
Q

Combination of muscles and water based fluids

A

Hydrostatic skeleton

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3
Q

Surrounds and protects body

A

Exoskeleton

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4
Q

What are arthropods’ exoskeletons made of

A

Chitin

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5
Q

Internal structures that only protect internal organs and other structures

A

Endoskeleton

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6
Q

What are the two parts of the vertebral skeleton

A

Axial and appendicular

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7
Q

Main longitudinal axis

A

Axial

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8
Q

Limbs, bones, and girdles

A

Appendicular

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9
Q

Formed when two or more bones come together

A

Joint

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10
Q

Living, dynamic tissue

A

None

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11
Q

Form bone

A

Osteoblasts

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12
Q

Break bone

A

Osteoclasts

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13
Q

What links bones to muscles?

A

Tendons

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14
Q

Cylindrical bundles in muscle fibers

A

Myofibrils

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15
Q

Bundle made of muscle fibers

A

Fascicle

16
Q

Muscle fibers are made of what?

A

Myofibrils

17
Q

A wide band of myosin

A

A band

18
Q

Narrow region in center of A band, space between two sets of thin filaments

A

H zone

19
Q

In center of H zones, proteins that link central regions of adjacent thick filaments

A

M line

20
Q

Two sets of thin filaments anchored to a net work of proteins at this point

A

z line

21
Q

What does 2 successive Z lines make?

A

Sarcomere

22
Q

Contains portions of thin filaments that do not overlap thick filaments

A

I band

23
Q

Extend from surface of myosin toward thin filaments

A

Cross bridges

24
Q

How many subunits combine to form a protein?

A

6

25
Q

What forms cross bridges?

A

Two myosin heads

Biology' (3 decks)

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