Cranial I Flashcards
How much of our body is water?
60%, 500ml produced per day
CSF is how much water? Where does CSF go?
99%; CSF fluid goes to extra cranial lymphatics!
What is the motion of CSF?
Fluctuant motion opposed to flow
The reciprocal tension membrane has…
Mobility!
Brain and spinal cord have inherent…..
Motility (coiling and uncoiling)!
Cranial bones have articular….
Mobility (more about sutures)!
The sacrum moves…
Involuntarily (between ilia - more related to respiratory motion)
When does the Metopic suture close?
3-9 months old
When does the coronal suture fuse?
20-50 yo
Midpoint of the posterior margin of foramen magnum?
Opisthion
Which of the following sutures is correctly matched with its landmark?a) Inion - midpoint on posterior margin of foramen magnumb) Bregma - junction of sagittal and coronal suturesc) Opisthion- junction of sagittal and lamboidal suturesd) Lambda - prominent part of the external occipital protuberance.
b) Bregma - junction of sagittal and coronal suturesBelow are the correct pairings!Opisthion - midpoint on posterior margin of foramen magnumBregma - jxn of sagittal and coronal sutures** Lambda - jxn of sagittal and lamboidal sutures**Inion - prominent part of the external occipital protuberance.
The bridge of your nose where the frontal and nasal bone suture meet is called…..
Nasion!!
Which of the following sutures is correctly matched with its landmark?a) Asterion- smooth prominence on frontal bone between and above the eyebrowsb) Pterion - meeting of frontal, parietal, sphenoid, and temporal bonesc) Nasion- junction of lambed suture, OM suture and parietomastoid sutured) Glabella - junction of frontal and nasal bone sutures
b) Pterion - meeting of frontal, parietal, sphenoid, and temporal bonesCorrect pairings below:- Glabella: smooth prominence on frontal bone between and above the eyebrows (close to mitopic suture)- Pterion: meeting of frontal, parietal, sphenoid, and temporal bones- Asterion: junction of lambed suture, OM suture and parietomastoid suture (more posterior)- Nasion: junction of frontal and nasal bone sutures
WHat is the anterior attachment of the falx cerebri?
The Crista Galli, posterior to Glabella
What is the posterior attachment of the falx cerebri?
Internal Occipital Protuberance, at the Inion
Where is the one bone on bone articulation at birth?
OA
Rapid growth of CNS causes….
Folding
COmpressive forces create the cranial base while……
Stretching the vault
Bones of the cranial base
Sphenoid, Ethmoid, Temporal (SET on the BASE)
Membrane/Vault? She is going fast
…..
Primary Respiratory Mechanism
“Breath of life”
CSF has a ….motion
Fluctuant
What secretes CSF in ventricles?
Choroid Plexuses
Fxns of CSF?
Float/protect CNS, transport hormones, lymphatics of CNS
What does the CSF contain?
Sodium, chloride, potassium, glucose
The reciprocal tension membrane has two layers, the outer layer….
lines cranial cavity, inner periosteum…………
…
..
The Brain and spinal cord have inherent motility. What is it like?
Subtle, slow, pulse, wavelike motionBiphasic (Inalation vs. Exhalation)
The cranial bones exhibit….?
articular mobility
What are the adult sutures?
Serrate, squamous, harmonic and Squa….
“Beveled like gills of a fish” is a term described on the beveling that is located on which site?
External / out side`
T or F: the sacrum moves voluntarily
F: The sacrum moves INVOLUNTARILY
poles and axis?
??
T or F: The cranial rhythmic impulse cycles at 10-14 times per minute
True
In the cranium,
…
Which is not a midline bone? Which lines do this move in?Occiputsphenoidparietalsacrumethmoidvomer
parietal;Midline bones ONLY move in flexion and extension
Which is not a paired bone? (note, there are much more than this list) What motion do these bones move in?a) Temporalb) Frontalc) Zygomad) Maxillae) Sphenoid
e) SphenoidPaired bones only move in EXTERNAL and INTERNAL rotation.
When the midline bones in flexion, where do the paired bones move?
Flexion= External rotation
When the midline bones in extension, where do the paired bones move?
Extension: internal rotation
In cranial flexion what is occurring?
InhalationMidline structures:- Sacrum base rotates posterior/superior- SBS rises
