Exam 3: Eye, Ear, Etc lecture iv and Neck lecture Flashcards
middle ear’s air-filled cavity, the _ cavity, is w/in the temporal bone
tympanic cavity
the tympanic cavity, the _ tube opens into the cavity
pharyngotympanic tube
some middle ear contents (we are learning 3)
- auditory ossicles
- chorda tympani nerve
- two skeletal muscles: tensor tympani and stapedius
the malleus is attached to the _ membrane
auditory ossicle; tympanic membrane
the incus and stapes are attached to the
auditory ossicles; oval window
the chorda tympani is a branch of the _ nerve (and CN #)
facial nerve (CN VII)
the tensor tympani runs from bone and wall of pharyngotympanic tube to the _
malleus
the tensor tympani, it tenses the the tympanic membrane and dampens movements of the ossicles, which help with
preventing loud sounds from damaging the internal ear
the stapedius runs from wall of tympanic cavity to _
stapes
the stapedius dampens movements of the
stapes
the hyoid bone contains a _, two _ and two _
a body, two greater horns, and two lesser horns
the hyoid bone makes _ with any other bone
no joints
the hyoid bone is suspended, inferior to the mandible, from the styloid processes of the temporal bones by the _
stylohyoid ligaments
the hyoid bone provides a _ for the tongue
movable base
the hyoid bone serves as a _ to help keep the airway open, and is required for _
a prop; required for swallowing
sternocleidomastoid: origin
from mastoid process and superior nuchal line (ie skull)
sternocleidomastoid: insertions (a 2 headed muscle)
- to manubrium of sternum (sternal head of muscle)
2. medial third of clavicle (clavicular head of muscle)
sternocleidomastoid: innervation (and CN #)
spinal accessory nerve (CN XI)
sternocleidomastoid: produces multiple movements of _ and _
produces multiple movements of the head and neck
sternocleidomastoid (SCM): action includes either head extension or head flexion via _
bilateral contraction of both SCMs
sternocleidomastoid (SCM): action includes assisting in _ during breathing via bilateral contraction of both SCMs
rib cage expansion
sternocleidomastoid (SCM): action includes laterally flexing the head (bending it sideways) and rotating head so chin rotates toward the contralateral (opposite) side via
unilateral contraction of one SCM
arteries in anterior cervical and SCM regions: brachiocephalic trunk: ascends from from the
arch of the aorta (1st branch off the aorta)
arteries in anterior cervical and SCM regions: brachiocephalic trunk: bifurcates into the
right common carotid (supplies head and neck) artery and right subclavian artery (supply limbs)
arteries in anterior cervical and SCM regions: the right subclavian artery becomes the _ artery
right axillary artery
arteries in anterior cervical and SCM regions: left common carotid artery: arises from the _
aortic arch
arteries in anterior cervical and SCM regions: left common carotid artery: both common carotid arteries ascend within a _
carotid sheath
arteries in anterior cervical and SCM regions: the carotid sheath is a tube of deep fascia that also contains the (2 structures)
internal jugular vein and vagus nerve
arteries in anterior cervical and SCM regions: left subclavian artery: arises from the _
aortic arch
arteries in anterior cervical and SCM regions: left subclavian artery: becomes the _ artery
left axillary artery
arteries in anterior cervical and SCM regions: each common carotid artery terminates by dividing into an _ artery and _ artery
internal carotid artery and an external carotid artery
arteries in anterior cervical and SCM regions: carotid sinus: a dilation of the proximal part of the
internal carotid artery (it may involve the common carotid artery too)
arteries in anterior cervical and SCM regions: carotid sinus: in its wall are _ that detect changes in arterial blood pressure
baroreceptors
veins in anterior cervical and SCM regions: right internal jugular vein: drains (3 structures)
brain, anterior face, and neck structures
veins in anterior cervical and SCM regions: right internal jugular vein and right subclavian vein: drain _ and merge to form _
drains upper limb; merge to form the right brachiocephalic vein
veins in anterior cervical and SCM regions: right internal jugular vein and right subclavian vein: t/f, pattern repeats of the left
true
veins in anterior cervical and SCM regions: rt and lt brachiocephalic veins merge to form the _ which drains to the rt atrium
superior vena cava
veins in anterior cervical and SCM regions: external jugular vein: drains into the _ before that vein merges with the internal jugular vein (on rt and lt sides)
into the subclavian vein
veins in anterior cervical and SCM regions: external jugular vein: part of it lies on the surface of
SCM
veins in anterior cervical and SCM regions: external jugular vein: it drains many head structures external to the
skull
thyroid: consists mostly of _ lobes, united by a thin, central _
mostly of rt and lt lobes, united by a thin, central isthmus
thyroid: wraps around the _ and _ aspects of the trachea at the level of the trachea’s 2nd to 4th rings
anterior and lateral aspects
thyroid: blood supply: a four-way anastomosis of the _ arteries
right and left SUPERIOR thyroid arteries and rt and lt INFERIOR thyroid arteries
thyroid: blood supply: the rt and lt inferior thyroid arteries are branches of branches of the _ arteries
subclavian arteries
parathyroids: typically, 4 of these (two _ and two _ parathyroids) exist on the _ surface of the thyroid
(two superior parathyroids and two inferior parathyroids) exists on the posterior surface of the thyroid
t/f: aberrant parathyroid glandular tissue is not uncommon
true
larynx: consists of an articulating skeleton of 9 cartilages joined by _, _, and _, and lined with _
ligaments, membranes, and muscles, and lined w/ mucous membrane
larynx: thyroid cartilage (1): (the largest/smallest?); its anterior projection is the _
(largest); laryngeal prominence
larynx: thyrohyoid membrane: attached thyroid cartilage to
hyoid
larynx: epiglottic cartilage (1): is _ cartilage
elastic
larynx: epiglottic cartilage (1): together w/ an overlying mucous membrane forms the
epiglottis
larynx: epiglottic cartilage (1): attached by ligaments to the _ cartilage and _ bone
thyroid cartilage and hyoid bone
larynx: epiglottic cartilage (1): prevents _ from entering the larynx during swallowing
food
pharynx has how many parts? and what are they?
3
- nasopharynx
- oropharynx
- laryngopharynx
pharynx: nasopharynx: posterior to the
nose
pharynx: nasopharynx: the superior, _ part of the pharynx
non-collapsible part
pharynx: nasopharynx: contains the _ tonsil
pharyngeal tonsil
pharynx: nasopharynx: has only a _ fcn
respiratory fcn
pharynx: oropharynx: posterior to the
mouth
pharynx: laryngopharynx: posterior to the
larynx