Skeletal System (1+2) Flashcards

1
Q

How many bones are in a baby?

A

300

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2
Q

What are the five functions of the skeletal system?

A
  1. Movement
  2. Support of posture
  3. Protection of major organisms
  4. Makes blood
  5. Storage of minerals
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3
Q

What are the two sections the skeletal system is divided into?

A

Axial and appendicular

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4
Q

Axial skeleton is

A

Skeleton which consists of the skull, vertebrae, and ribs

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5
Q

Appendicular skeleton is

A

Skeleton which includes the pelvic girdle and the bones of the arms and legs

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6
Q

Long bones

A

Femur, humorous

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7
Q

Short bone

A

Patella, carpals, tarsals

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8
Q

Flat bones

A

Ribs, pelvis

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9
Q

Irregular bones

A

Vertebrae, mandible

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10
Q

What are the two types of bone tissue

A

Compact and cancellous

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11
Q

Compact bone

A

Dense, smooth, strong

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12
Q

Cancellous bone

A

Spongy and lightweight

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13
Q

The main shaft of the long bone is called the

A

Diaphysis (composed of compact bone)

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14
Q

The two ends of the bone are called

A

Epiphysis (composed of cancellous bone)

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15
Q

What does the inside cavity of the bone contain?

A

Bone marrow

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16
Q

What are the two types of bone marrow?

A

Red and yellow bone marrow

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17
Q

What does red bone marrow contain?

A

Red and white blood cells, platelets

18
Q

What does the yellow bone marrow contain?

A

Fat

19
Q

Osteoblasts are responsible for

A

Building bone

20
Q

Osteoclasts are responsible for

A

Bone dissolving

21
Q

What are osteocytes?

A

Mature osteoblasts that have become trapped in the bone matrix they produced

22
Q

What happens if osteoblasts, osteocytes, and osteoclasts aren’t working together well?

A

Osteoporosis

23
Q

What is the bone that sits above the larynx? What is its purpose?

A

Hyoid bone thats purpose is movement of the tongue

24
Q

What happens at the epiphyseal plate?

A

Growth

25
Q

What type of connective tissue is found at the end of long bones?

A

Articular cartilage

26
Q

Ligament

A

Connects bone to bone

27
Q

Tendon

A

Connects muscle to bone

28
Q

What are fontanels and why do we have them?

A

Soft spots that are on babies heads for brain growth and passage down the vaginal canal

29
Q

What are the 3 types of joints?

A
  1. Fibrous (skull)
  2. Cartilaginous (between the skull and ribs)
  3. Synovial (gliding joint in wrist)
30
Q

Which is the smallest and most fragile facial bone?

A

Lacrimal

31
Q

Which bone on the skull protects the organs that are responsible for hearing and equilibrium?

A

Temporal

32
Q

Which is the only movable facial bone?

A

Mandible

33
Q

Which facial bone is known as the cheek bone?

A

Zygomatic

34
Q

What is the space called at the base of the skull that houses the spinal cord?

A

Foramen Magnum

35
Q

Which bone makes up the forehead?

A

Frontal

36
Q

How many bones are in an adult?

A

206

37
Q

What is fetal ossification?

A

When cartilage turns to bone

38
Q

Wolf’s law

A

Bone in a healthy person will adapt to the loads under which it is placed

39
Q

Red blood cells

A

Carry oxygen to major muscles

40
Q

White blood cells

A

Fight infection