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Week 9
11/06
| Question | Answer |
|---|---|
| Q Where does the R recurrent laryn. n. split off the vagus? | A The R recur. laryn. n. branches off the vagus on the R to loop around the subclavian a. |
| Q Where does the L recurrent laryn. n. branch off the vagus n.? | A It loops around the arch of the aorta on the L |
| Q Are the phrenic nn. med or lat tothe vagus? | A Lat |
| Q Where do the phrenic nn. pass in relation to the subclavian a./v.? | A ant to a. and pos to v. |
| Q This ganglion is located pos to the mandible, just ant to longus capitis m., and pos to internal carotid a. | A Superior C ganglion |
| Q At what vertebral level is the middle C ganglion found?*** | A C6, or at the level of the cricoid cartilage*** |
| Q What forms the Stellate ganglion? Where is this found? | A many times the inf C ganglion is fused with the thoracic ganglion to form the stellate/cervicothoracic ganglion. This is found ant to TP C7, near the neck of the first rib. |
| Q what does the R lymphatic duct drain? Where does it drain into? | A R side of head, thorax and R upper extremity. It empties into the confluence of the R subclavian/int jugular v. |
| Q The thoracic duct drains everything except the R side of head/thorax and R arm. Where does it drain into? | A confluence of L subclavian/int jugular v. |
| Q Which of the three gands in the sup endocrine layer of the C viscera is bilobed? | A The thyroid gland |
| Q Apart from the fact that the thyroid gland is bilobed, what are distinguishing characteristics? | A Between the lobes is a connecting "isthmus", and it may have a pyramidal lobe extending sup |
| Q What is the function of the thyroid gland? | A to regulate metabolism, and Ca flow |
| Q How many aa. supply the thyroid gland? | A The sup/inf thyroid aa. on both the L/R sides makes 4 total |
| Q The thymus gland is also considered a part of the superficial endocrine layer of the cervical viscera, along with the thyroid gland, and the parathyroid glands. Where is the thymus gland located? | A thymus is found in root of neck in infants, but by adulthood it is all located in the mediastinum ANT to the greater vessels of the heart |
| Q What composes the superficial fascia of the neck? | A the hypodermis |
| Q Which layer of the deep C fascia forms the roof of the ant and pos triangles? | A The investing fascia. This is a tough first line of defense/mechanical barrier |
| Q This is the most superficial of the deep C fascia | A Investing fascia. take out netters plate 35, and read through the notes on the sup/inf attachments of this fascia to familiarize yourself |
| Q This fascia is found on the ANT neck only. Hint: it is deep to the infrhyoid mm. | A pretracheal fascia |
| Q The inf attachment of this deep C fascia blends with the fibrous pericardium | A the pretracheal fascia.....confused? Check netters plate 35 both top and bottom while reading through the neck notes pg 18 |
| Q Which of the deep C fascia wraps the thyroid gland? What does this create? | A The pretracheal fascia does this and creates the buccopharyngeal fascia |
| Q The prevertebral fascia of the deep C fascia encircles which mm.? What does the ant prevertebral fascia blend with? | A It encircles the prevertebral mm., easy enough, and it blends with the ALL |
| Q this fluid filled space allows for movement ofthe phrynx during swallowing. | A retropharyngeal space, between the buccopharyngeal/prevertebral fascia. |
| Q What is a common name for the pharynx? | A The throat |
| Q Which direction do the external mm. of the pharynx run? What about the internal mm.? | A The external are circular for constriction, the internal are longitudinal to pull the pharynx up and over food so the constrictors can move food down |
| Q there are three constrictor mm. in the pharynx. Sup, mid, and inf. Each of these is innervated by cranial roots of the CN XI (accessory), and two of them are also innervated by branches of the vagus. which of the three is NOT innervated by vagus? | A sup. Long question for a short answer, i know. |
| Q Which of the external pharynx mm. attaches to the stylohyoid lig, and the hyoid bone? | A middle |
| Q Where does the inf constrictor m. of the pharynx attach? | A thyroid and cricoid cartilages |
| Q What is the pos attachment for all the constrictor mm. of the pharynx? | A pos median raphe' |
| Q why are there gaps in the pharyngeal musculature? | A for structures to enter the pharynx |
| Q What two structures pass between the sup/mid constrictor mm. of the pharynx?*** | A CNIX Glossopharyngeal, and the stylopharyngeus m. *** |
| Q Where does the dynamic duo of the sup laryngeal a. and the internal laryngeal n. pass through the constrictor/external mm. of the pharynx? | A between the middle and inf constrictor mm. |
| Q There are three internal mm. of the pharynx, and two of them are innervated by the vagus n. Which is not, and what innervates it?*** | A The stylopharyngeus m is innervated by the glossopharyngeal n.*** Remember that the stylopharyngeus m passes between the sup/mid constrictor mm. in the pharynx |
| Q Look at netters plate 64 on the bottom. From cartilage over the entrance to the auditory tube, there is a mm. that extends inf to blend with the palatopharyngeus m. Which m. is this?*** | A The Salpingopharyngeus m *** |
| Q What does salpingo mean? | A Tube |
| Q After the salpingopharyngeus m blends with the palatopharyngeus m., where does it attach?*** | A to the thyroid cartilage*** |
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GrossAnatomy1
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