Day 15 (pg 207) Flashcards
What nerve(s) provide motor innervation to the scalp?
facial nerve branches
What is the embryonic origin of skeletal muscles innervated by the facial nerve?
the skeletal muscle is derived from the branchial arches hence branchial efferent
What is the third layer of the scalp associated with?
muscular component of the scalp
What muscle(s) are specifically associated with the scalp?
frontalis and occipitals bellies of the epicranius muscle
The bellies of the epicranius muscle are connected by what structure?
galea aponeurotica
What is the fourth layer of the scalp
loose connective tissue layer
What is the fifth layer of the scalp?
pericranium
Which muscles lack any attachment to bone?
orbicularis oris, procerus & risorius
Which divisions of the trigeminal nerve receive sensory information from the face?
all 3 divisions: ophthalmic nerve, maxillary nerve & mandibular nerve
What landmark forms the apex of the orbit?
convergence of the superior orbital fissure and inferior orbital fissure
What opening(s) are located along the superior wall of the orbit?
optic canal
What are the contents of the optic canal?
optic nerve & ophthalmic artery
What bones form the medial wall of the orbit?
ethmoid, frontal, lacrimal & sphenoid bones
What are the openings located along the medial wall of the orbit?
anterior ethmoid & posterior ethmoid foramina
What is the name given to the medial wall of orbit?
lamina papyracea
What opening(s) are located along the lateral wall of the orbit?
superior orbital fissure
What opening(s) are located along the inferior wall of the orbit?
inferior orbital fissure
What is contained in the inferior orbital fissure?
maxillary division of trigeminal nerve
What are the layers of the eyelid?
skin, orbicularis oculi muscle, tarsal plate/tarsus & palbebral conjunctiva
What are the names given to the modified sebaceous gland in the tarsus of the eyelid?
tarsal or Meibomian gland
What is the location of a Meibomian gland?
tarsus of the eyelid
What is the name of the modified sebaceous gland at the base of the eyelash?
ciliary gland
What are the parts of the lacrimal gland
orbital and palpebral parts
The lacrimal gland is an example of what classification of gland?
exocrine gland
What is the single common characteristic of exocrine glands?
ducts drain product from the secretory units of the gland
Into what location will the lacrimal gland ducts open?
superior fornix
What is the drainage pattern of tears?
lacrimal punctum, lacrimal canaliculus, lacrimal sac, nasolacrimal duct & inferior nasal meatus
Which visceral efferent (VE) pathway is conveyed in the seventh cranial nerve?
a parasympathetic motor pathway
