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Honors Anatomy > The Skeletal System (Axial) Pt. 1 > Flashcards

The Skeletal System (Axial) Pt. 1 Flashcards

1
Q

How many bones structure the axial skeleton?

A

Structured from 80 bones

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2
Q

What does the axial skeleton form?

A

Forms the long axis of the body

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3
Q

What bones are included in the axial skeleton? (3)

A
  • Bones of the skull
  • Vertebral column
  • Rib cage
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4
Q

What are sutures?

A

Interlocking joints that firmly unite all the bones of the adult skull

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5
Q

What kind of appearance do suture lines have? (2)

A

Have a sawtooth or serrated appearance

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6
Q

What are the four major skull sutures? (4)

A
  • Coronal
  • Sagittal
  • Squamous
  • Lambdoid
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7
Q

What does the frontal bone form? (first 2)

A
  • Forehead
  • Bony projections under the eyebrows
  • Superior part of each eye’s orbit
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8
Q

What does the frontal bone form around the eye?

A

The superior part of each eye’s orbit

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9
Q

What does foramen magnum mean?

A

Means large hole

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10
Q

Where is the foramen magnum found?

A

The base of the occipital bone

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11
Q

What does the foramen magnum surround?

A

Surrounds the lower part of the brain

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12
Q

What does the foramen magnum allow for with the brain?

A

Allows the spinal cord to connect with the brain

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13
Q

What are occipital condyles and where are they found?

A

Rocker-like and lateral to (on each side of) the foramen

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14
Q

Where do the occipital condyles rest?

A

Rest on the first vertebra of the spinal column (atlas)

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15
Q

What kind of shape does a sphenoid bone have? What does it span? (2)

A
  • Has a butterfly shape
  • Spans the width of the skull
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16
Q

What does the sphenoid bone form?

A

Forms part of the floor of the cranial cavity

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17
Q

What does sella turcica mean?

A

Turk’s saddle

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18
Q

What is the sella turcica? What is it in the middle of?

A

A small depression in the middle of the sphenoid bone

19
Q

What is held in place at the sella turcica?

A

The pituitary gland is held in place there

20
Q

What is the crista galli Latin for?

A

Latin for cock’s comb

21
Q

Where does the crista galli project from?

A

Projects from its superior surface

22
Q

What attaches to the crista galli?

A

The outer most covering of the brain attaches to this projection

23
Q

What are cribriform plates?

A

The small holes on each side of the crista galli

24
Q

What do the cribriform plates allow for?

A

Allow nerve fibers carrying impulses from the olfactory (smell) receptors of the nose to reach the brain

25
Q

How many bones comprise the facial bones?

A

14 bones that comprise the facial bones

26
Q

How many facial bones are paired?

A

12 bones are paired

27
Q

What are the two singles bones of the face? (2)

A
  • Mandible
  • Vomer
28
Q

What are the mandible and vomer?

A

Two single bones of the face

29
Q

What is another name for maxillae?

A

Maxillary bones

30
Q

What is another name for maxillary bones?

A

Maxillae

31
Q

What fuses to form forms the upper jaw?

A

The two maxillae (maxillary bones) fuse to form the upper jaw

32
Q

What do the two maxillae fuse to form?

A

Fuse to form the upper jaw

33
Q

What is maxillae (maxillary bones)?

A

The main bones of the face

34
Q

What do the maxillae (maxillary bones) carry and where? (2)

A
  • Carry the upper teeth
  • In the alveolar margin
35
Q

Where do the paired palatine bones lie and next to what?

A

The paired palatine bones lie posterior to the palatine processes of the maxillae

36
Q

What do the palatine bones form?

A

Form the posterior part of the hard palate

37
Q

What causes a cleft palate?

A

Failure of palatine bones or the palatine processes to fuse medially

38
Q

What are the nasal bones? What do they form?

A

Small rectangular bones that form the bridge of the nose

39
Q

What is the inferior conchae? What do they project from?

A

Thin curved bones projecting from the lateral walls of the nasal cavity

40
Q

What is the inferior conchae part of?

A

Part of the ethmoid bone

41
Q

What is the hyoid bone not part of?

A

Not part of the skull

42
Q

What is the hyoid bone closely related to?

A

Closely related to the mandible and temporal bones

43
Q

What doesn’t the hyoid bone do?

A

Doesn’t articulate directly with any other bone

Honors Anatomy (30 decks)

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