Chapter 7- The Axial Skeleton Flashcards Preview

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Flashcards in Chapter 7- The Axial Skeleton Deck (43)
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The axial skeleton can be recognized because it...

Forms the longitudinal axis of the body

1

The axial skeleton provides an extensive surface area for the attachment of muscles that...

1. Adjust the positions of the head, neck, and the trunk
2. Perform respiratory movements
3. Stabilize or position parts of the appendicular skeleton

2

What includes bones found exclusively in the axial skeleton?

Skull, vertebrae, ribs, sternum, hyoid

3

The axial skeleton creates a framework that supports and protects organ systems in the...

Ventral body cavities

4

The bones of the cranium that exclusively represent single,unpaired bones are the...

Occipital, frontal, sphenoid, and ethmoid

5

The paired bones of the cranium are the...

Parietal and temporal

6

The associated bones of the skull include the...

Hyoid and auditory ossicles

7

The single, unpaired bones that make up the skeletal part of the face are the...

Mandible and vomer

8

The lines, tubercles, crests, ridges, and other processes on the bones represent areas that are used primarily for...

Attachment of muscles and bones

9

The sutures that articulate the bones of the skull are the...

Lamboid, Sagittal, coronal, squamous

10

Foramina, located on the bones of the skull, serve primarily as passageways for...

Nerves and blood vessels

11

The bones that make up the lateral wall and rumor of the eye orbit are the...

Maxilla, zygomatic, and sphenoid

12

The sinuses, or internal chambers in the skull, are found in the...

Sphenoid, frontal, ethmoid, and maxillary bones

13

The nasal complex consists of the...

1. Frontal, sphenoid, and ethmoid bones
2. Maxilla, lacrimal, and ethmoidal concha
3. Inferior concha

14

The air filled chambers that communicate with the nasal cavities are the...

Paranasal sinuses

15

The primary function of the paranasal sinus mucus epithelium is to...

1. Lighten the skull bones
2. Humidify and warm incoming air
3. Trap foreign particulate matter such as dust

16

Areas of the head that are involved in the formation of the skull are called...

Ossification centers

17

The reason the skull can be distorted without damage during birth is...

Fibrous connective tissue connects the cranial bones

18

The anatomical structures that allows for distortion of the infant skull during the birthing process are called...

Fontanelles

19

The most significant growth in the skull occurs before age 5 because...

The brain stops growing and cranial sutures develop

20

The primary spinal curves that appear late in fetal development...

Accommodate the thoracic and abdominopelvic viscera

21

An abnormal lateral curvature of the spine is called...

Scoliosis

22

The vertebrae that indirectly effect changes in the volume of the rib cage are the...

Thoracic vertebrae

23

The most massive and least mobile of the vertebrae are the...

Lumbar

24

What identifies the sequence of the vertebra from superior to inferior?

Cervical, thoracic, lumbar, sacrum, coccyx

25

When identifying the vertebra, a numerical shorthand is used, such as C3. The C refers to the...

The region of the vertebrae

26

C1 and C2 have specific names, which are the...

Atlas and axis

27

The sacrum consists of five fused elements that afford protection for...

Reproductive, digestive, and excretory organs

28

The primary purpose of the coccyx is to provide...

An attachment site for a muscle that closes the anal opening

29

The first seven pairs of ribs are called true ribs, while the lower five pairs are called false ribs because...

They do not attach directly or the sternum