Flashcards in Day 15 (pg 207) Deck (28):
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?
What is the fourth layer of the scalp
loose connective tissue layer
What is the fifth layer of the scalp?
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?
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?
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?
What are the parts of the lacrimal gland
orbital and palpebral parts
The lacrimal gland is an example of what classification of 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?
What is the drainage pattern of tears?
lacrimal punctum, lacrimal canaliculus, lacrimal sac, nasolacrimal duct & inferior nasal meatus