Gross 2

Description:	01/15
Category:	Anatomy
Created by:	GrossAnatomy2 on 2008-01-22
Stack ID:	115523

Flap 1	Flap 2
Q The subclavian m., which holds down the clavicle, inserts where?	A Subclavian groove on inf surface of the clavicle N419
Q Where does the costoclavicular ligament attach on the clavicle, and what action does it limit?	A It attaches to the costal tubercle on the proximal/inf aspect of the clavicle. It limits elevation N 419
Q Where does the coracoclavicular ligament attach to the clavicle?	A On the Conoid tubercle. This part of the ligament is cone shaped. Also on the trapezoid line. This part of the ligament is trapezoid(?) shaped. N423
Q The SC joint mimics what type of joint?	A Ball and socket
Q This structure found in the SC joint affords it extra strength and shock absorption	A Fibrous Articular Disk N419
Q Blood supply to the SC joint is provided by What 3 vessels?***	A Internal thoracic artery, suprascapular a., and the thoracoacromial trunk *** N 427, 189
Q What kind of joint is the AC joint?	A plane (diarthrotic)
Q T/F the interarticular disc in the AC joint is complete.***	A FALSE, the interarticular disc is incomplete in the AC joint*** N423
Q This ligament in the AC joint protects the supraspinatous m.	A The coracoacromial lig N423
Q This ligament has two parts, and holds up the scap	A The coracoclavicular ligament N423.
Q What are the two parts of the coraco-clavicular lig?	A Conoid in the shape of a cone, and the trapezoid with more of a rectangular shape.
Q What does coracoid mean in latin?	A crows beak
Note: Intrinsic lig's refer to capsules and discs	Note: Extrinsic lig's refer to lig's outside of the capsule/disc
Q The thoracoacromion trunk gives rise to what BV that is main blood supply to the AC joint?	A the acromion a. branches off the thoraco-acromion trunk. N427
Q Apart from the acromion a., what BV supplies the AC joint, and what does it branch off of?	A The suprascapular a. branches off of the thyrocervical trunk N 427
Q What innervates the subscapular m.? What cord of the brachial plexus are these (hint) from?	A The upper and lower subscapular nn., from the pos cord N430
Q Aside from medial rotation of the humerus, what is the action of the subscapularis m.?	A adduction, because it is located inf to the humeral axis of rotation
Q Where does the subscapularis m. insert? What does this insertion help form?	A On the med margin of the lesser tubercle of the humerus, contributing to the formation of the GH joint capsule. N425
Q What is the origin of the supraspinatous m.?	A The supraspinatous fossa of the scap, easy enough...BUT, it originates from the whole fossa, not just the edge
Q This m. inserts into the sup aspect of the greater tubercle of the humerus, AND contributes to the formation of the GH capsule.	A supraspinatous m.
Q The suprascapular n. is interesting as it branches off the sup trunk of the brachial plexus. Where does it go?	A from the sup trunk of the brachial plexus, it passes (ant to pos) through the suprascapular notch (that means under the suprascapular ligament), and then INTO the supraspinatous m. N 425-426
Q Does the infraspin m. originate from the edge of the infraspin fossa?	A NO, the origin is from the WHOLE fossa
Q This m. inserts into the med. aspect of the greater tubercle of the humerus, and contributes to the formation of the GH joint capsule.	A Infraspin. m.
Q What direction would the supraspin m. rotate the humerus?	A medially
Q Do you think theteres minor m. blends with the GH joint capsule? Where does this m. insert?	A Yes it does, and it inserts into the inf aspect of the greater tubercle of the humerus posteriorly.
Q The teres minor is innervated in part by the radial n., but mainly by what?	A By the axillary n., from the pos cord of the brachial plexus.
Q What structure does the axillary n. pass through on it's way to innervate the teres minor and deltoid mm.? ***	A The Quadrangular space ***
Q What vessel accompanies the axillary n. as it passes through the quadrangular space? ***	A Pos humeral circumflex a. ***
Q What BV does the pos humeral circumflex a. branch off of? Be specific.	A The THIRD part of the axillary a. N427
Q How will you tell apart the axillary n. and the pos humeral circumflex a. in lab? ***	A The BV is closer to the bone (lateral) and the n. is more medial***
Q The teres minor is the sup border and the teres major is the inf border of the quad space. What are the lat/med borders?***	A Lat border = upper shaft of the humerus/lat head of the triceps m., and med border = long head of the triceps m.

Blood, Heart and Circulation- Arteries- Aneurysms

An aneurysm is a bulge or "ballooning" in the wall of an artery. Arteries are blood vessels that carry oxygen-rich blood from the heart to other parts of the body. If an aneurysm grows large, it can burst and cause dangerous bleeding or even death.

Most aneurysms occur in the aorta, the main artery traveling from the heart through the chest and abdomen. Aneurysms also can happen in arteries in the brain, heart and other parts of the body. If an aneurysm in the brain bursts, it causes a stroke.

Aneurysms can develop and become large before causing any symptoms. Often doctors can stop aneurysms from bursting if they find and treat them early. Medicines and surgery are the two main treatments for aneurysms.

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