Ch 7 Axial Skeleton Flashcards
What composes the axial skeleton
- Skull
- Cranial bones
- Facial bones
- Hyoid bone
- Thoracic cage
- Vertebral Column
How many cranial cavity bones are there
8
How many facial bones are there
14
How many vertebral bones are there
24
How many bones are there in the spinal column
26
How many rib bones are there
24
These surface marking allows for passages soft tissues (blood vessels, nerves, and ligaments and tendons)
Depressions and openings
This surface marking is a projection or growth, forms joints, and allows for attachment
Processes
This type of depression and opening is a narrow slit between adjacent bones
Fissure
This type of depression and opening opens for blood vessels, nerves and ligaments
Foramen
This type of depression and opening is a shallow depression
Fossa
This type of depression and opening is a furrow (groove) along a bone to accommodate a blood vessel, nerve or tendon
Sulcus
This type of depression and opening is a tube like opening
Meatus
This type of processes is large, round protuberance
Condyle
This type of process is above the projection of the condyle
Epicondyle
This type of processes is a smooth, flat surface
Facet
This type of processes is a long, narrow ridge
Line
This type of processes is a prominent ridge
Crest
This type of processes is a sharp, slender projection
Spinous process
This type of processes is a very large projection
Trochanter
This type of processes is a rounded projection
Tubercule
This type of processes is a projection with a rough, bumpy surface
Tuberosity
Another name for cheekbones
Zygomatic Process
This is where the TMJ is located
Mandibular fossa
This temporal structure is where neck muscles attach to
Mastoid Process
This temporal bone is a sharp projection and attaches several muscles of the tongue
Styloid Process
This bone is known as the base of the skull, has the foramen magnum occipital condyles
Occipital Bone
This bone is a butterfly shape, articulates with all cranial bones, it is the bottom of eye orbit
Sphenoid bone
This sphenoid bone is a saddle shaped structure for the pituitary gland
Sella turcica
This bone forms the nasal cavity and is an irregular bone
Ethmoid Bone
This bones forms the bridge of the nose
Nasal Bone
This bone are two small bones that is under the eye orbit
Lacrimal bones
This bones forms the posterior part of the hard palate
Palatine bone
This happens when failure of fusing the palatine bone
Cleft Palate
Name the cranial bones
- Middle Nasal Concha
- Zygomatic
- Frontal
- Temporal
- Maxilla
Name the cranial bones
- Parietal
- Occi[ital
- Temporal
- External auditory Meatus
- Mandible
- Maxilla
- Zygomatic Bone
- Sphenoid
- Frontal
Label the Spinal Region
- Cervial (7)
- Thoracic (12)
- Lumbar (5)
- Sacral (1)
- Coccygeal (1)
what are the features of the vertebral bones
- Spinous Process
- Tansverse Process
- Facet
- Spinal Canal
- Vertebral Body
what are the features of the atlas
- Facet
- Posterior Arch
- Transverse Process
- Transverse Foramen
- Anterior Arch
These are 2 bones fused to form the upper jaw, upper teeth and upper portion of hard palate?
Maxilla Bone
This bone is the only freely moveable joint for the skull muscles for chewing attach here, TMJ joint
Mandible
This skull feature is where ossification has not completed at birth these turn into sutures of the skull
Fontanels (soft spots)
This suture fuses the frontal & parietal bones
Coronal suture
This suture fuses the left and right parietal bones
Sagittal suture
This suture fuses the parietal & occipital bones
Lambdoil Suture
This suture fuses the parietal and temporal bones
Squamous Suture
This skull feature is a hollow space/cavity inside the skull bones
Sinuses
what is the purpose of sinuses for the nasal cavity
helps filter air and help with sound production
what are the 4 sinuses of the skull
- Frontal
- Ethomiod
- Sphenoid
- Maxillary
This bone does not articulate with any other bone and its used for muscle attachment
hyoid bone
This bone does not articulate with any other bone and its used for muscle attachment
hyoid bone
what seperates each vertabrae of the spinal column
Cartilaginous discs
what is the feature called
intervertebral foramen
what is this feature called
Intervertebral disc
the sacral curve is formed by how many bones being fused
5
what are the primary curves called and what are their regions
- Kyphosis (concave)
- Thoracic & sacral regions
This secondary curve helps to look up to the Lord and where are the regions located
- Lordosis (convex)
- Cervical & Lumbar regions
this spinal disease causes curvature to the side
scoliosis
What is the other name for Vetebral arch
Lamina
Name the labeling
- Vertebral body
- Vertebral Arch
- Transverse Process
- Spinous Process
which cervical bone does not have a body and has depressions for occipital bones
Altas (C1)
Which cervical bone acts as a pivot for the rotating head
Axis (C2)
This region of the spinal column articulates with the ribs
Thoracic Region
which region of the spinal column is the largest and strongest of the vertebral column
Lumbar Region
how many bones fused in the coccyx region
4
This region of the spinal column is the foundation of the pelvic girdle
Sacrum
what are the 3 parts of the sternum
- Manubrium
- Body
- Xiphoid Process
Another name for the sternum
Breastbone
What ribs are considered true ribs
1-7
What ribs are the false ribs
8-12