Week 1 - wet room 1 Flashcards
what are 3 parts which the skull is divided into?
the neuro-cranium
the facial skull (viscera cranium)
mandible
what is the most common joint type found between most bones in the skull?
fibrous suture joint
what is the structure of a skull bone like?
3 layers
upper and lower layer = compact bone
middle layer = spongy bone / diploe
which part of the skull bone contains red marrow?
the diploe
how many bones are there of the cranium and what are they called?
8; frontal parietal ( set of 2) temporal (set of 2) occipital sphenoid ethmoid
what is the name of the suture which joins the 2 parietal bones together?
sagittal
where is the coronal suture found?
between the frontal and parietal bones
what is the name of the suture which connects the parietal and he occipital bones?
lambdoid suture
what type of bones make up the facial skeleton / facial cranium?
irregular bones
what are the 6 main bones of the facial skeleton?
frontal bone nasal lacrimal zygomatic maxilla mandible
what is the name of the bump on the occipital bone called?
occipital protuberance
where would you find the mastoid process? and what bone is it found on?
behind the ear
temporal bone
where would you find the zygomatic arch and from what bones is it formed by?
cheek bone
zygomatic and temporal bones
where would you find the soloed process and from what bone is it found?
slender pointed piece of bone found under the ear
temporal bone
what is the part on the occipital bone which articulates with the 1st cervical vertebra (Atlas)?
occipital condyles
what are the 3 fossae with the cranial cavity is divided into?
anterior fossa
middle fossa
posterior fossa
what is the name of the largest foramina in the skull and what structures pass through it?
formane magnum
medulla and meninges
r. and l. vertebral arteries
dural veins
what are th features of the sphenoid bone which can be viewed from the inside of the skull?
greater and lesser wings
pterygoid plates
pituitary fossa
body
what is the name for the sockets of the eyeballs?
orbits
what decreases the weight of the skull?
air sinuses and sacs
what are the 3 bones which make up the ear ossicles?
malleus
incus
stapes
where are the ear ossicles located?
external auditory meatus (external ear canal)
petrous part of the temporal bone immediately inside this canal on the floor of the skull
what is the suborbital and subtrochlear arteries branches of?
ophthalmic artery
what are 3 main branches of the external carotid artery which supplies the head?
superficial temporal
posterior auricular
occipital
what vein does the supratrochlear and supraorbital veins drain into?
facial vein - EJV
what vein does the superficial temporal drain into?
retromandibular - EJV
what vein does the posterior auricular vein drain into?
EJV
what vein does the occipital vein drain into?
EJV
what allows spread of infection from the scalp into the cranial cavity?
emissary veins
what vein does the facial vein drain into?
internal jugular vein
what artery is the facial a branch of?
external carotid artery
