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Bits EOY 2
woop
70
Medical
Undergraduate 2
10/31/2015

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Cards

Term
Which of the following is not one of the three parts of the pharynx - oropharynx, hyopharynx, laryngopharynx, nasopharynx
Definition
Hyopharynx
Term
What part of the skull does the pharynx attach to?
Definition
Occipital bone
Term
The middle constrictor muscle of the pharynx is mainly off what bone?
Definition
Hyoid bone
Term
The inferior constrictor muscle of the pharynx is mainly off what cartilage?
Definition
Thyroid, a bit cricoid
Term
The longitudinal muscles of the pharynx that pulls the pharynx up when swallowing
Definition
Stylopharyngeus
Term
The longitudinal muscles of the pharynx that starts at the hard palate
Definition
Palatopharyngeus
Term
The longitudinal muscles of the pharynx that equalises pressure between the pharynx and middle ear
Definition
Salpingopharyngeus
Term
The muscles of the pharynx are supplied by branches of these nerves
Definition
Glossopharyngeal and vagus
Term
One of the arteries that may be at risk when operating on the tonsils
Definition
Facial artery
Term
One of the arteries that may be at risk when operating on the tonsils
Definition
Internal carotid artery
Term
The palatine, tubal, lingual tonsils, and adenoids form what lymphatic structure?
Definition
Waldeyer's ring
Term
Any food passing over the laryngeal opening should cause what to occur?
Definition
Cough reflex
Term
What nerve supply to the larynx is associated with the cough reflex?
Definition
Vagus
Term
In which phase of swallowing do you reduce food to a bolus and position it for transport?
Definition
Oral phase
Term
In which phase of swallowing does the epiglottis begin to "downfold" and laryngeal closure starts from the bottom up?
Definition
Pharyngeal phase
Term
In which phase of swallowing does peristalsis carry the bolus through the oesophagus to the stomach?
Definition
Eosophageal phase
Term
The epiglottis is made to close by the movement of what bone?
Definition
Hyoid
Term
The angle between what two cartilages is different in males and females?
Definition
Cricoid
Term
What muscles are the only abductors of vocal cords and thus will cause you to suffocate if they are paralysed?
Definition
Posterior cricoarytenoids
Term
What nerve supplies the posterior cricoarytenoids and if damaged will cause you to suffocate?
Definition
Recurrent laryngeal nerve
Term
What nerve supplies the cricothyroid muscles above the true vocal folds?
Definition
Internal laryngeal nerve
Term
What nerve supplies the cricothyroid muscles below the true vocal folds?
Definition
Recurrent laryngeal nerve
Term
Does the basal ganglia send messages to the caudal part of the ventral lateral nucleus (VLc) or the oral part (VLo)?
Definition
VLo
Term
Do the pons and cerebellum send messages to the caudal part of the ventral lateral nucleus (VLc) or the oral part (VLo)?
Definition
VLc
Term
Are lower or upper motor neurons involved in reflexive movements?
Definition
Lower
Term
Do upper motor neurons directly innervate muscle?
Definition
No
Term
Are there vertical or horizontal connections between regions of the cortex?
Definition
Both
Term
What is the main descending pathway for an upper motor neuron?
Definition
Lateral corticospinal tract
Term
Which type of motor pathways involves voluntary movements and is under direct cortical control?
Definition
Lateral motor pathways
Term
Which type of motor pathways involves posture and locomotion and is under brain stem control?
Definition
Ventromedial motor pathways
Term
Are things controlling distal parts of the body (eg hands and fingers) medial or lateral to those controlling proximal parts (eg shoulder)?
Definition
Lateral
Term
What is the decussaion point for the medial/ventral corticopspinal tract (10-20% of neurons)?
Definition
Spinal cord at level of lower motor neurons
Term
What is the decussaion point for the corticobulbar tract?
Definition
Medulla
Term
From a common set of neurons in primary motor cortex two tracts descend in close proximity. Which is the direct pathway?
Definition
Lateral corticospinal tract
Term
From a common set of neurons in primary motor cortex two tracts descend in close proximity. Which is the indirect pathway?
Definition
Cortico-rubrospinal tract
Term
What major tract controls the muscles of facial expression, mastication, and swallowing?
Definition
Corticobulbar tract
Term
What major tract conducts impulses from the brain to the spinal cord, and then to trunk and limb muscles?
Definition
Corticospinal tract
Term
The corticospinal tract goes through what area of the internal capsule?
Definition
Posterior limb
Term
Are ventral or lateral corticospinal fibres already crossed?
Definition
Lateral
Term
The main bunch of neurons from the spinothalamic tract and spinoreticular tract head to what area of the brain?
Definition
Thalamus
Term
One of the two nuclei in the brainstem where all information eventually reaches
Definition
Gracile nucleus
Term
One of the two nuclei in the brainstem where all information eventually reaches
Definition
Cuneate nucleus
Term
Where the gracile and cuneate nucleus are located
Definition
Medulla oblongata
Term
The dorsal column nucleus that participates in the sensation of fine touch and proprioception of the lower body (legs and trunk
Definition
Gracile nucleus
Term
The dorsal column nucleus that recieves fine touch and proprioceptive information from the upper body (above T6, except the face and ear
Definition
Cuneate nucleus
Term
Which is more medial in the medulla - the gracile or cuneate nucleus?
Definition
Gracile nucleus
Term
Unami detects foods high in what macro?
Definition
Protein
Term
T1R2 and T1R3 tastebuds encode for what property of food and drink
Definition
Acidity
Term
What are the bumps on the tongue called?
Definition
Papilli
Term
What papilla are found in the most anterior region of the tongue?
Definition
Fungiform
Term
What papilla are found in the middle region of the tongue?
Definition
Foliate
Term
What papilla are found in the most posterior region of the tongue?
Definition
Vallate
Term
What are the most numerous & smallest papillae, that also contain no taste buds?
Definition
Filliform
Term
Which papilla are much larger than any of others
Definition
Circumvallate
Term
Which papilla are the least numerous
Definition
Folate
Term
Do you get APs from taste bud cells?
Definition
No, graded potentials
Term
Which of the three major classes of taste cells is just a straight population of ion channels that sits on outer surface, and is sensitive directly to conc of Na+?
Definition
Type I glial-like cell
Term
Which of the three major classes of taste cells has glutamate receptor ion channels, is not associated with a particular ion, and runs on second messenger cascades, principally going to release intracellular Ca
Definition
Type II receptor cell
Term
Which of the three major classes of taste cells is based on acid concentration and detects it 2 ways - acid will permeated the membrane and get into the cell; if acid conc gets high enough the H+ can drive an ion gated channel
Definition
Type III presynaptic cell
Term
The three major classes of taste cells are identified by their expression of what?
Definition
Type of protein
Term
Sweet, bitter, and umami are mediated by what process?
Definition
G-protein
Term
Salt and sour are mediated by what process?
Definition
Simple ion mechanisms
Term
The human T1R2-T1R3 receptor detects what?
Definition
Sweetness
Term
What substance blocks salt taste sensation?
Definition
Amiloride (K+ sparring diuretic)
Term
Taste in the epiglottis region is via which cranial nerve?
Definition
Vagus (X)
Term
Olfactory receptor cells are what type of neurons?
Definition
Bipolar
Term
What is the average lifespan of an olfactory cell?
Definition
60 days
Term
When the Cl- channel opens on an olfactory cell, does Cl- go in or out of the cell?
Definition
Out
Term
Besides the thalamus, where else do olfactory bulbs project to?
Definition
Limbic cortex
Term
Olfactory information can be found in which area of the brain?
Definition
Orbitofrontal cortex
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