A&P - Chapter 12 (Part 1) Flashcards
What kind of tissues forms bone?
Skeletal
What are the 2 division of the skeleton?
- Axial
2. Appendicular
What makes up the axial skeleton? (4)
- Skull
- Hyoid
- Spine
- Thorax
What makes up the appendicular skeleton? (4)
- Upper extremities
- Lower extremities
- Shoulder girdle
- Hip girdle
How many bones make up the skull?
28
What are the 2 bones the skull is categorized in?
- Cranial bones
2. Facial bones
What are 6 cranial bones?
- Frontal
- Parietal
- has 2 - Temoral
- has 2 - Occipital
- Sphenoid
- Ethmoid
What bone forms a moveable joint with C1
Occipital bone
What does the coronal suture connect? (2)
- Frontal bone
2. Parietal bone
What does the lambdoid suture connect? (3)
- Parietal bone
- Temporal bone
- Occipital bone
What does the squamous suture connect? (4)
- Parietal bone
- Occipital bone
- Temporal bone
- Sphenoid bone
What are 8 facial bones?
- Maxilla
- has 2 - Mandible
- Zygomatic
- has 2 - Nasal
- has 2 - Lacrimal
- has 2 - Palantine
- has 2 - Inferior nasal conchae
- has 2 - Vomer
What is the largest/strongest facial bone?
Mandible
What does the mandible only form?
Moveable joint of the skull
- with temporal
What does the zygomatic bone do?
Forms the shapes of the cheeks
What does the lacrimal bone contain?
A groove for tear ducts
What are 3 ear bones?
- Malleus/hammer
- one in each ear - Incus/anvil
- one in each ear - Stapes/stirrup
- one in each ear
How many cranial bones are there in total?
8
How many facial bones are there in total?
14
How many ear bones are there in total?
6
What make up sinuses (3)
- Numerous space
- Cavities
- Caverns on the bones of the skull
What are 3 examples of sinuses?
- Sphenoid sinus
- Frontal sinus
- Maxillary sinus
Sinusitis
Inflammation in the sinuses
When you breath, where does the air fill?
Sinuses
What does the fetal skull have that arent seen in adult skulls?
Unique anatomical features
What are the unique anatomical features of a fetal skull?
4 soft spots
What are the 4 soft spots on a fetal skull referred to as?
Fontanels
What do fontanels allow? (2)
- The skull to be flexible during birth
2. Rapid growth of the brain
Where is the hyoid bone located?
Just above the larynx and below the mandible
What shape is the hyoid bone?
U shaped
Where is the hyoid bone suspended from?
Styloid processes of the temporal bone
What is special about the hyoid bone?
It is the only bone in the body that doesnt articulate with any other bones
What does the hyoid bone allow? (2)
- Tongue movement
2. Swallowing
Where is the hyoid bone attached? (2)
- To muscles of the tongue
2. Floor of the mouth
What muscles attach to the hyoid bone?
Neck muscles
