Introduction to skeleton Flashcards
What is role of skeleton?
provides support, is the framework for soft tissues, locomotion
how is the skeleton divided?
axial and appendicular skeleton
Which skeleton divisions is for locomotion?
Appendicular skeleton
Which skeleton divisions is for support and protection?
Axial
Which skeleton do the ribs fall into?
Axial
How many bones in appendicular?
126
what allows movement of bones?
joints
what % of body mass is muscle?
40%
what controls movement of skeletal muscles?
nervous system
what is jaw bone called?
mandible
which bones is the top of skull divided into?
frontal bone, parietal bone (back), temporal bone (lower down)
what joins the parietal and frontal bones at the top?
coronal suture
how many zygomatic bones are there?
where find?
2
forms the cheek bones of the face and articulates with the frontal, sphenoid, temporal and maxilla bones.
what is maxilla? how many bones?
2, comprises part of the upper jaw and hard palate
what does the coronal suture connect?
fuses the frontal bone with the two parietal bones.
what is the cribiform plate?
The cribriform plate forms the roof of the nasal cavity. It is pierced by numerous olfactory nerve fibres, which gives it a sieve-like structure.
where do you find the cribriform plate?
top of the internal surface of the skull
what is the jugular foramen?
foramina that jugular vein leaves
which is the largest cranial foramina?
foramen magnum
what does the foramen magnum do?
allows the passage of the medulla and meninges, the vertebral arteries, the anterior and posterior spinal arteries and the dural veins.
what brings the main blood supply to the brain?
internal carotid artery
how does blood circulate in the brain?
blood enters carotid canal by the internal carotid artery, circulates and leaves by jugular vein
what are fibrous joints connected by?
fibrous tissue
what are cart. joints connected by?
cart. tissue
