Week 5 Flashcards
Axial Skeleton
Bones of the middle skeleton
Appendicular Skeleton
limbs that attach to the axial skeleton
How many bones in the Body?
206
Mandible
-irregular bone
-only bone in the skull that is moveable
Suture
Joint between 2 bones
Function of holes in skull/sinus
make the skull lighter
2 Ways the spine resists compression
- Intervertebral Discs
2.Curvatures
Intervertebral Discs
-between the vertebrae
-resists compression
-allows for movement
Parts of the Vertebrae
- Cervical (7)
- Thoracic (12)
- Lumbar (5)
- Sacrum
- Coccyx (tailbone)
How many curvatures are in the spine?
4
Primary curvature
-Curves forward
-think fetal position
-thoracic spine & sacrum
Secondary Curvature
-Curves Backwards
-happens after birth
-Cervical & Lumbar
What kind of bone is ribs?
flat bone
True Ribs
-First 7
-attach directly to sternum
False Ribs
- Ribs 8-12
- Do not directly attach to sternum
Floating Ribs
- Ribs 11 & 12
-Protect kidneys - do not attach to sternum AT ALL
Anterior Fontanelle
Soft spot on top of newborn head
Function of Anterior Fontanelle
-Assists with birth
- allows for brain growth
Pectoral Girdle
-made up of clavicle & scapula
-for movement & exploring the environment
Sternoclavicular Joint
only point where pectoral girdle attaches to body
Function of Sternoclavicular Joint
allows for increase in movement
Foosh Injury
- fall on outstretch hand
- fracture of scaphoid bone
Pelvic Girdle
-formed by a single hip bone
-strong point of attachment
-not a lot of movement
-solid for weight baring
Sacroiliac Joint
illium attaches to the sacrum
Difference between female & male pelvis
- Women have rounder rim & wider cavity (appears lower)
Function of difference in pelvis (male & female)
Childbirth
Femur
largest, heaviest bone in body
Patella
-sesamoid bone
- the knee cap
Tibia
- medial
- takes weight
- articulates with femur
Fibula
- lateral
- does not take any weight
- does not articulate with femur
Tarsal
short bones in ankle for stability
Talus
-tarsal
- takes the load in your ankle
Ligaments
attach bones to bones
Tendons
attach muscles to bones
Articulation
- anywhere bones come together (joint)
- contains cartilage
Structural Classifications of Joints
- fibrous
- cartilaginous
- Synovial
Fibrous Joint
-does not move
-ex suture in skull
Cartilaginous Joint
- allow for SOME movement
- ex pubic synthesis
Synovial Joint
-most common joint in body
-allows for free movement
-has synovial fluid
- ex. Glenohumeral Joint
Synovial Fluid
- circulates nutrients to cartilage of joint
- Motion is Lotion
