Bones Flashcards

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0
Q

What consists in the axial skeleton?

A

The skull and bones that support it; vertebral column, ribs, and sternum

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1
Q

How many bones does the adult human have?

A

206

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2
Q

What consists of the appendicular skeleton?

A

Bones of the arms and legs and the structures associated with them such as pectoral and pelvic girdles

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3
Q

What is a joint?

A

Where two or more bones meet

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4
Q

What are the types of joints?

A

Ball and socket, hinge, gliding, pivot, and fixed

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5
Q

What is a ligament?

A

Tough band of connective tissue that connects bones to bones

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6
Q

What is cartilage?

A

Allows for smooth movement between bones

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7
Q

What is the bursa?

A

Fluid-filled sacs that cushion and absorb shock and keeps bones from rubbing against each other

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8
Q

What are tendons?

A

Thick bands of connective tissue that attach muscle to bone

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9
Q

What is a sprain?

A

Forcible twisting of a joint; can result in injury to bursa, ligaments, and tendons

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10
Q

What is arthritis?

A

Common joint disease; inflammation results from infection, aging, or injury; can result in bone spurs

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11
Q

What are osteoblasts?

A

Potential bone cells

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12
Q

What are osteoclasts?

A

Cells that repair bone cells

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13
Q

How do bones grow?

A

In length and diameter

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14
Q

How do bones grow in length?

A

Occurs at ends of bones in growth plates

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15
Q

How do bones grow in diameter?

A

Occurs on the outer surface of the bone

16
Q

How do growth spurts happen?

A

Hormones in the teen years cause the osteoblasts to divide more rapidly

17
Q

What is compact tissue?

A

Layer of hard bone covered by a nerve and blood vessel filled membrane that supplies nutrients and oxygen to bone cells

18
Q

What is spongy tissue?

A

Solid bone tissue filled with many holes and spaces like those seen in a sponge

19
Q

What is marrow?

A

Soft tissue which fills the center cavity of a bone

20
Q

What is red marrow?

A

Found in humerus, femur, sternum, rubs, vertebra, and pelvis; produces red blood cells, some white cells, and cell fragments involved in blood clotting

21
Q

What is yellow marrow?

A

Found in many other bones; stores fats and acids in producing red blood cells when there is a massive blood loss due to severe injury

22
Q

What are the functions of the skeletal system?

A

Provides support for the body, movement, and produces blood cells