Chap 3 A&P skeletal system Flashcards
Skeletal system
206 bones
The skeleton is divided into what to regions
Axial skeleton 80 bones
Appendicular skeleton 126 bones
Type of skeleton bones forms the central supporting axis of the body
Axial skeleton
skull,vertebral column , thoracic cage, hyoid bone (throat bone)
Bones of the upper limb and pectoral girdle and the bones of the lower limbs and the pelvic girdle or examples of what skeletal region
Appendicular skeleton
What bone is roughly cube shape, like the ankle and wrist bone
Short bones
Sternal bones, ribs, scapula, clavicle, most of the cranial bones or examples of what type of bone
Flat bones
Bones that form within some tendons in response to stress. Include the knee, respond, knuckles
Sesamoid bones
Sesamoid bones are unique examples of
Short bones
The largest bone cavity in an adult
Cranial
Holes in the bones that allow passage for nerves and blood vessels
Foramen
Large hole in school or spinal cord which the brain
Foramen magnum
Example of an immovable joint in the school
Sutures
Some people have extra bones in the school what are those called
Sutural (wormian) bones
Suture that crosses the crown of the head from right to left and joins the frontal bone to the perietal bone
Coronal suture
Sutured laterally side connects the Perio bone to the Temporel bone
Squamous suture
Suture that connects the two Parietal bones
Sagittal suture
Suture connects the parietal bone to the occipital bone
Lambdoidol suture
How many bones are in the skull
22
Blank bone is a pair. It is on the right and left of the top part of the skull
Parietal bone
Blank bone is a pair it is inferolateral aspect of the skull
By the ears
Temporal bone
Blank bone is not a pair superior and anterior part of the skull forehead
Frontal bone
Blank bone is not a pair it is an anterior cranial bone located between the eyes
Ethmoid bone
Bone is not a pair it is posterior cranial base
Occipital bone
Bone is not a pair Keystone “holds together” at the cranial bones
Sphenoid bone
How many facial bones are there
14
Blank facial bone is a pair. It is the largest facial bone. It forms the upper jaw and Keystone “holds together” of the facial bones
Maxillae
Think of the max
Blank bones support the teeth and give shape and individuaility to the face, and provide attachment for the muscles for facial expression
Facial bones
Facial bone is a pair forms the rest of the hard palate roof of the mouth
Palatine bones
Facial bone is a pair. It forms the angles of the cheeks and the inferior lateral margins. They extend about halfway to the ear
What makes your cheek structure
Zygomatic bone
Facial bone is a pair. They ensure that the air contact the mucous membranes the cover these bones which clean and humidify the air
Inferior nasal conchae
Facial bone is not a pair contributes to the form of the inferior nasal septum
Vomer
The only facial bones I can move
Mandible
Slender you shaped bone between the chin and larynx
Hyoid
The vertebral column has how many irregular bones
26
Physically supports the skull and trunk
Vertebral column a.k.a. spine
The purple column has a change of how many vertebrae
33
Mass of spongy bone and red bone marrow covered with a thin shell of compact bone. Also the weight bearing portion of the vertebrae
Centrum a.k.a. body
Is the bony arc that protects the vertebral foreman that the spinal cord runs through
Vertebral arch
Vertebral arch consist of two parts on each side what are these two part
Lamina - platelike
Pedicles- pillarlike
Is a space/whole created between centrum and vertebral arch
Vertebral foramen
Went to vertebrae or joint they exhibit an opening between their pedicles call the
Intravertebral foramen
Allows passage for spinal nerves that connect with the spinal cord at regular intervals
Intervertebral foramen
Are the smallest and lightest one other than the Coccygeals
C1 - C7
Cervical vertebrae
C1 vertebrae that allows you to nod
Atlas
C2 vertebrae that allows you to pivot “ shake your head”
Axis
T1 through T 12 one per pair of ribs is connected to each vertebrae
Thoracic vertebrae
Attachment sites where ribs attached to the thoracic vertebrae are called
Facets
L1 through L5 lower back
Lumbar vertebrae
Is a bony plate that forms the posterior wall of the pelvic cavity S1 through S5
Sacral vertebrae
Consist of four sometimes five small vertebrae a.k.a. tailbone
Coccygeal vertebrae
Bony plate anterior to the heart
Sternum a.k.a. breastbone
Is the prod superior portion of the sternum
Manubrium
Is the long part of the sternum
Gladiolus body of the sternum
At the inferior end of the sternum is a small ?????? that is below the body of the sternum
Xiphoid process
How many ribs do you have
24
12 pairs
Most of them are attached to the posterior and the vertebral column and most of them are also attached to the interior end of the sternum
Ribs
The interior attachment is by the way a long strip of hyaline cartilage called
Costal cartilage
Blank attached directly to sternum be a coastal cartilages
1-7
True ribs
8 through 12
Ribs that like a dedicated costal cartilage
False ribs
8 to 10 ribs That cannot connect to the sternum
Vertebrochrondral ribs
Which pairs of ribs are are floating ribs I cannot connect to the sternum
11 and 12
Supports the arm consist of two bones on each side of the body
Pectoral girdle
Another name for clavicle
Collarbone
Triangular bone forming shoulder socket with head of humerus
Scapula a.k.a. shoulder blade
Upper arm extends from shoulder to the elbow
Humerus
Bones that make forearm
Radius (thumb side)
Ulna ( pinky side)
How many carbs are in the wrist
Eight
One pair of coxal bone
Pelvic girdle
Superior hip
Ilium
Inferior anterior portion, forming pubic symphysis
Pubis
Inferior posterior portion forming ishial tuberosity
Ishium
Longest bone and body
Femur
Floating bone and knee held by tendons
Patella
Shinbone T-shaped near knee
Tibia
Lateral bone that helps to stabilize the ankle
Fibula
Another name for ankle
Tarsal
Pedal region
Foot
Three main functions of the skeletal system
Support movement protection
How are bones held together
By ligaments
Are muscles attached to the bone by tendons
Yes
What are joints
Junctions between the bones
How many joints are there in the body
230
How many classification of fractures are there
To open and closed
Types of fractures
Greenstick Comminuted Pathologic Epiphyseal Oblique Transverse Impact
If a fracture break skin is it considered open even if you can’t see bone
Yes
Regions in the vertebral column
7 cervic 12 thoracic 5 lumbar 5 sacrum 1 coccyx