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freshman year - biology flashcards > Skeletal System > Flashcards

Skeletal System Flashcards

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AP® Biology flashcards
1
Q

What are the two divisions in the human body between bones & muscles?

A

Axial Skeleton + Axial Muscles & Appendicular Skeleton + Appendicular Muscles

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2
Q

What is contained in the Axial System?

A

Skull, the vertebral column (spine), ribs & sternum

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3
Q

What is contained in the Appendicular System?

A

Bones of the Shoulders, Arms, Hands, Hips, Legs, & Feet

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4
Q

What are the smallest and largest things in your body?

A

Cells = smallest — Organ Systems = largest

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5
Q

What two things define an organ?

A

It has 2 or more tissues & is a part of a system.

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6
Q

How many organ systems are there?

A

11

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7
Q

How many bones are in a grown persons body?

A

206 Bones

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8
Q

How many bones does a baby have?

A

304, they merge as they grow

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9
Q

How many bones are in the axial system?

A

80

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10
Q

How many bones are in the appendicular system?

A

126

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11
Q

PARTS OF THE BONE : what is the Compact Bone?

A

The outer (hard) layer

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12
Q

PARTS OF THE BONE : What is the Spongy Bone?

A

The inside of the bone, where marrow is found

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13
Q

PARTS OF THE BONE : What are the two kinds of marrow & their functions?

A

Red Marrow - creates red & white blood cells / Yellow Marrow - creates fat (energy production)

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14
Q

PARTS OF THE BONE : What is an Osteocyte?

A

Living bone cells, they monitor & maintain the bone matrix

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15
Q

PARTS OF THE BONE : What is the Osteoblast’s function?

A

Creates bone cells

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16
Q

PARTS OF THE BONE : What is the Osteoclast’s function?

A

Destroys bone cells

17
Q

PARTS OF THE BONE : What is Apoptosis?

A

The self-destruction of Osteoblasts & Osteoclasts by the body

18
Q

What is the function: Support

A

The skeletal support of the muscles: like legs, the pelvis, & the spine in order to hold up the body.

19
Q

What is the function: Protection

A

Bones the protect organs in our bodies: the skull protects the brain, vertebrae protects spinal column, rib cage

20
Q

What is the function: Blood Cell Formation

A

Red Bone Marrow produces red/white blood cells

21
Q

What is the function: Reservoir

A

The storing & releasing of phosphorus & calcium

22
Q

What is the function: Movement

A

Attached muscles that pull on bones to move the body

freshman year - biology flashcards (11 decks)

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