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BIOLOGY 2ND QUARTER > Skeletal System > Flashcards

Skeletal System Flashcards

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1
Q

Number of bones in an human adult skeleton

A

206 bones

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2
Q

Number of bones in an human infant skeleton

A

300 bones

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3
Q

Functions of the Skeletal System (5)

A

Framework, storage, movement, protection, Blood Cell Production

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4
Q

Main mineral stored in bones.

A

Calcium

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5
Q

Another term for Blood Cell Production

A

Hematopoiesis

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6
Q

Coats the end of bones where they meet to form a joint

A

Cartilage

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7
Q

Attaches muscle to bone

A

Tendons

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8
Q

Connects bones to each other; holds joints in place

A

Ligaments

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9
Q

Gives ability to move

A

Joints

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10
Q

Classification of bones. (4)

A

Long, short, irregular, flat

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11
Q

Longer length than width

A

Long bone

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12
Q

Length is equal to width

A

Short bone

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13
Q

Protects fragile organs

A

Flat bone

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14
Q

Has no uniformed shape

A

Irregular bone

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15
Q

Classification of bone tissue (4)

A

Compact bone, spongy bone, osteocytes, bone marrow

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16
Q

Forms hard exterior of bone

A

Compact bone

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17
Q

Porous bone that is for support and flexibility

A

Spongy bone

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18
Q

Where new cells are produced

A

Bone marrow

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19
Q

Makes up the bone tissue

A

Osteocytes

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20
Q

Parts of skeleton. (2)

A

Axial and Appendicular Skeleton

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21
Q

Forms longitudinal axis of body

A

Axial Skeleton

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22
Q

Bones of the limbs and girdles

A

Appendicular Skeleton

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23
Q

composed of collagen and calcium phosphate; living growing tissue; makes up only 20% of body weight because it is lightweight

A

Bones

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24
Q

Provides soft framework

A

Collagen

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25
Q

Strengthens and hardens framework

A

Calcium Phosphate

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26
Q

Membrane the covers the surface of bone that contains network of blood vessels that supplies nutrients

A

Periosteum

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27
Q

Network that carries nourishment to the living bone tissue

A

Haversian Canal

28
Q

found in most bone; can be converted into red bone marrow

A

Yellow Bone Marrow

29
Q

material at the epiphyseal ends of the long bones

A

Red Bone Marrow

30
Q

Made of spongy bone; found in the ends of bones

A

Epiphyses

31
Q

Made of compact bone; found in the middle part of bones

A

Diaphysis

32
Q

Cushions the joint

A

Articular Cartilage

33
Q

Types of joints (3)

A

Fixed joint, semi-movable joint, movable joint

34
Q

Joint that prevents bone movements

A

Fixed joint

35
Q

Joint that allows limited movement

A

Semi-movable joint

36
Q

Joint that supports movement

A

Movable joint

37
Q

For lubrication

A

Synovial Fluid

38
Q

Immune system defect

A

Arthritis Rheumatoid

39
Q

Weakens bones

A

Osteoarthritis

40
Q

Lack of calcium which causes fragile bones

A

Osteoporosis

41
Q

Contains bone marrow

A

Medullary Cavity

42
Q

Number of bones in hand

A

27 bones

43
Q

Lower leg bone that gets all the weight; thicker

A

Tibia

44
Q

Lower leg bone that gets no weight; thinner

A

Fibula

45
Q

Hardest part of the skull

A

Cranial

46
Q

Part of skull that forms the face

A

Facial

47
Q

3 smallest bones found in the auditory ossicles

A

Malleus, stapes, incus

48
Q

Smallest bone

A

Stapes

49
Q

Only movable joint in the skull

A

Mandible

50
Q

Collar bone

A

Clavicle

51
Q

Shoulder Blade

A

Scapula

52
Q

Number of vertebarae

A

33 vertebra

53
Q

Protects spinal cord

A

Vertebral column

54
Q

Breast bone

A

Sternum

55
Q

Ribs that are not attached to the sternum

A

Floating ribs

56
Q

Protects urinary, reproductive and digestive system

A

Pelvic Girdle

57
Q

Upper arm

A

Humerus

58
Q

Thicker part of the lower arm

A

Radius

59
Q

Thinner part of the lower arm

A

Ulna

60
Q

Wrist bones

A

Carpals

61
Q

Palm bones

A

Metacarpals

62
Q

Fingers and toes

A

Phalanges

63
Q

Ankle bones

A

Tarsals

64
Q

Sole bones

A

Metatarsals

65
Q

Knee bones

A

Patella

BIOLOGY 2ND QUARTER (8 decks)

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