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Chapter 7 - Skeleton
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36
Anatomy
Undergraduate 1
02/16/2010

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Term
Two regions of the skeleton
Definition
1. Axial
2. Appendicular
Term
Three sections of the Axial Region
Definition
1. Skull
2. Thoracic Cage
3. Vertebral Column
Term
How many bones are in the skull?
Definition
22
Term
Name the two bone sections of the skull
Definition
1. Cranium (8)
2. Facial (14)
Term
Name all the bones in the Cranium
Definition
1. Frontal
2. Temporal (2)
3. Parietal (2)
4. Occipital
5. Sphenoid
6. Ethmoid
Term
Frontal bone forms the:
Definition
Anterior portion of the cranium. Forms the forehead and roof of the orbits.
Term
Parietal bone forms:
Definition
Superior and lateral parts of the cranium
Term
Occipital bone forms:
Definition
base and posterior part of the cranium
Term
The occipital bone has two major features. They are:
Definition
1. Foramen magnum
2. Occiptal condyles
Term
Foramen Magnum
Definition
Large opening through which the spinal chord passes
Term
Occipital Condyles
Definition
Allow for articulation with the atlas vertebrae, forming the atlanto-occipital joint.
Term
Temporal bone is _______ to the parietal bone
Definition
Inferior
Term
Two major features of the temporal bone
Definition
1. External Acoustic Meatus
2. Mastoid
Term
Mastoid
Definition
Point of attachment for the sternocleidomastoid.
Term
External Acoustic Meatus
Definition
Opening which allows for hearing
Term
Sphenoid bone is
Definition
the keystone of the cranium bones and articulates with all of them.
Term
Sella Turcica
Definition
"Turk's Saddle". Depression on which the pituitary gland rests.
Term
Ethmoid bone
Definition
deepest cranial bone
Term
Cheek is made of
Definition
a zygomatic arch, which is an articulation between the zygomatic bone (cheekbone) and the zygomatic process of the temporal bone.
Term
The nose is comprised of
Definition
fused bones which form a bridge, connected to the frontal bone of the cranium, which is connected to the hyaline cartilage at the end of the external nose
Term
The nasal cavity has three parts
Definition
1. Roof (Ethmoid)
2. Lateral conchae
3. Nasal Septum
Term
The parts of the Lateral conchae
Definition
1. Superior and middle conchae are ethmoid.
2. Inferior is facial bone; and creates turbulence with inhaled air.
Term
Parts of the Nasal Septum
Definition
1. Cartilage
2. Vomer
3. Ethmoid
Term
Parts of the lower mouth (Lower jaw)
Definition
Mandible.
Term
The mandible articulates with what?
Definition
The mandibular fossa of the temporal bone through its own mandibular condyle. It forms the temporomandibular joint.
Term
Upper jaw parts
Definition
1. Maxillary
2. Palatine bones
Term
Maxillary bone
Definition
keystone of the facial bones
Term
Hyoid
Definition
No attachment to other bones, just to speaking and swallowing muscles.
Term
How many vertebrae are in the vertebral column?
Definition
26
Term
Sections of the vertebral column and their numbers
Definition
1. Cervical (7)
2. Thoracic (12)
3. Lumbar (5)
4. Sacral
5. Coccyx
Term
Draw the general structure of the vertebrae
Definition
(7 processes) Include the body, the foramen, lamina, and the articular processes.
Term
characteristics of C1
Definition
Atlas vertebrae. No body or spinous process.
Term
characteristics of C2
Definition
Axis. Dens on top of body.
Term
Characteristics of C3 - C7
Definition
1. small, oval body
2. large vertebral foramen
Term
Characteristics of T1-T12
Definition
1. Larger body
2. Smaller foramen
3. Transverse processes with ribs
Term
Characteristics of L1-L5
Definition
1. Massive, kidney-shaped body
2. Large foramen
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