arm muscles

Question 1

what is the name of the shoulder joint?

Answer 1

ball and socket joint

Question 2

what is the type of teh shoulder joint?

Answer 2

synovial

Question 3

what are the articulating bones of teh shoulder joint?

Answer 3

the heead of the humerus and teh glenoid cavity

Question 4

describe the movement of teh shoulder joint

Answer 4

flexion,extension,hyperextension, medial and lateral rotation. adduction and abduction and circumduction

Question 5

what muscles help strengthena nd stablize the shoulder joint?

Answer 5

muscles taht surrond the joint and the rotator cuff muscles

Question 6

Fill in the blank
the cuff name is given to the of the (name the uscles)

Answer 6

tendon of the subscalpularis, infra and suprasoinatous, and teres minor

Question 7

Fill in the blank
Cuff muscles are fused to the ? of the joint

Answer 7

Capsule

Question 8

what sides do the cuff rotator muscles cover?

Answer 8

anteriorly, superiorly and posteriorly

Question 9

where is the weak point of the shoulder joint?

Answer 9

inferior

Question 10

True or False
Can the shoulder joint be easily dislocated?

Answer 10

True

Question 11

the arm muscles is surronded by?

Answer 11

Deep fascia

Question 12

Explain the job of the deep fascia

Answer 12

it encloses two intramuscular septa: lateral and medial

Question 13

where are the the two intramuscular septa attached to?

Answer 13

the supracondyler ridges of the humerus

Question 14

what divides the arm into anterior and posterior compartments?

Answer 14

the humerus, the two intermuscular septa

Question 15

name the 3 muscles of the anterior compartment of the arm

Answer 15

biceps brachii,coracobrachialis, brachialis

Question 16

origin and insertion of coracobrachialis

Answer 16

origin: coracoid process / insertion: middle of the shaft of the humerus

Question 17

what cord does the musculocutaneous nerve stem from?

Answer 17

lateral cord of brachial plexus

Question 18

the actions of the biceps brachii are

Answer 18

flexion of the elbow joint, flexion and stabliazation of the shoulder joint and its the main supinator muscle on the radioulnar joint.

Question 19

origin of the brachialis

Answer 19

from the medial and lateral intramsucular septa and from the lower 1/2 of the shaft of the humerus

Question 20

nerve supply for brachialis

Answer 20

medially musculocutaneus nerve
laterally radial nerve

Question 21

insertionof biceps brachii

Answer 21

inside the radial tuberosity
by an apenarosis into the superficial fascia

Question 22

nerve supply of coracobrachialis

Answer 22

musculocutaneus nerve

Question 23

action of the coracobrachilais

Answer 23

adduction of the arm
flexion of the shoulder

Question 24

origin of biceps brachii

Answer 24

long head: supra glenoid tubercle (intracapsuluar ,extrasynovial)
short head: tip of the coracoid process

Question 25

nerve supply of biceps brachii

Answer 25

musculcutaneuos nerve

Question 26

insertion of brachialis

Answer 26

ulnar tuberosity and coronoid process

Question 27

the main flexor of teh elbow is

Answer 27

brachialis

Question 28

the posterior muscles are called

Answer 28

triceps brachii

Question 29

insertion of the triceps brachii

Answer 29

inside the olecranon process and the fascia of the aconeus muscle

Question 30

the name of the small traingular msucle posteriorly

Answer 30

anconeus muscle

Question 31

what head of the triceps brachiis origin is the infraglenoid tubercle ?

Answer 31

the long head

Question 32

which head is considered to be "deep"?

Answer 32

medial head

Question 33

posterior to teh humerus above the spiral groove is the origin for what head?

Answer 33

lateral head

Question 34

medial head origin?

Answer 34

posterior to the humerus belwo the spiral groove

Question 35

where does the brachial artery begin

Answer 35

llower border of the teres major msucle

Question 36

in what direction does the brachial artey travel?

Answer 36

medially down the humerus

Question 37

at the lower end of the humerus the brachial artery turns

Answer 37

anteriorly

Question 38

name the branches of teh brachial artery

Answer 38

profundai brachii artery superior and inferior ulnar collateral arteries and the muscular branches

Question 39

a joint is also known as

Answer 39

articulation

Question 40

what cervical numbers is the musculcutaneous nerve made out of

Answer 40

C5,6,7

Question 41

what muscle does teh musculocutaneus nerve pierce

Answer 41

coracobrachialis

Question 42

how is the lateral cutanueos nerve formed?

Answer 42

pierces the fascia that is lateral to the tendons of the biceps

Question 43

where does the lateral cutaneous nerve supply?

Answer 43

anteriorly lateral to teh skin of the forearm

Question 44

what cord is the radial nerve formed from?

Answer 44

posterior cord in the b rachial plexus

Question 45

nerve supply of the triceps brachii

Answer 45

radial nerve, seperate branch supplying each head

Question 46

action of the triceps brachii

Answer 46

extension of the elbow weak extension of the shoulder

Question 47

the job of teh rotator cuff muscles

Answer 47

helps hold the head of teh humerus in the glenoid cavity during shoulder movement

Question 48

the median nerve is formed because of what two roots from what two cords?

Answer 48

lateral and medial roots and cords

Question 49

cervical numbers of the median nerve

Answer 49

C5,6,7,8,and T1

Question 50

the nerve that runs laterally to the brachial artery at first then crosses over and runs medially is

Answer 50

the median nerve

Question 51

the radial nerve cervicals number are C5,6,7,8, and T1 and that is because

Answer 51

the radial nerve gives branches of nerve fibers from all 5 roots

Question 52

the anatomical journey of the radial nerve

Answer 52

exits the axilla and runs posteriorly of the brachial plexus with teh profunda brachii ( a branch of brachial artery) they enter the posterior compartment but before doing that, the radial nerve gives out two branches that wll supply the long and medial head of the triceps brachii muscle runs down inferiorly towards the radual (spiral) groove and wraps around laterally supply the lateral head of the tricpes brachii giving two sensory branches 1inferior lateral cutaneous nerve of the arm 2 dorsal anetbrachial cutaneous nerve of the forearm and pierces the lateral intramuscular septa and enters the aterior compartment being situated between the brachioradialis and brachialis

Question 53

the end of the brachial artery

Answer 53

opposite the neck of the radius

Question 54

what artery is most commonly used to meausre blood pressure?

Answer 54

brachial artery

Question 55

the lateeral cutaneous nerve enters teh forearm,how?

Answer 55

enetrs the elbow at teh cubital fossa and passes between the heads of the two pronator teres muscles of the forearm