Muscles Of Upper Limb 1 Flashcards
most superficial muscle in the pectoral region is???
Pectoralis major
PECTORALIS MAJOR
- broad or narrow?
- ___ shaped
- superficial or deep?
- ___ heads
Broad
fan
Superficial
2
List the heads of the pectoralis major
sternocoastal head
-clavicular head
Pectoralis major
Clavicular head – originates from the _____ surface of the ______
Sternocostal head – originates from the ___ surface of the sternum, the _______ and the aponeurosis of the ______ muscle.
anterior; medial clavicle.
anterior
superior six costal cartilages
external oblique
Pectoralis major
INSERTION: _____ of ____
intertubercular sulcus
humerus
Pectoralis major
ACTION: (1)____ and ______ UL and draws scapula _____
(2)clavicular head acts individually to ___ UL
adducts
medically rotates
anteroninferiorly
flex
Pectoralis major
INNERVATION: _____ pectoral nerves and _____ pectoral nerves
lateral C5-C7
medial C8-T1
pectoralis minor lies_____ the pectoralis major.
underneath
Pectoralis minor
ORIGIN: _____ surface of ____ from _ to _
Anterior
ribs
3-5
Pectoralis minor
INSERTION: _____ process of ____
coracoid
scapula
Pectoralis minor
ACTION: stabilize ____ by drawing it ______ against the ____
scapula
anteroinferiorly
Thoracic cage
Pectoralis minor
INNERVATION : _____ nerve
C_ to __
On the brachial plexus, anterior or posterior ?
medial pectoral
C8-T1
Anterior
The serratus anterior is located more _____ in the chest wall compared to other pectoral region muscles
laterally
Serratus anterior
ORIGIN: (medial or lateral?) part of ____ from - to -
Lateral
ribs 1-8
Serratus anterior
INSERTION: ____ face/_____border of the ____
coastal
medial
scapula
Serratus anterior
ACTION: (1) _____ the scapula allowing it to be raised ______ degrees
(2)holds the _____ against the rib cage
rotates
over 90
scapula
Serratus anterior
INNERVATION : _____ nerve
On the brachial plexus, it’s
Anterior or posterior roots?
From ___ to ___
long thoracic
Posterior
C5,C6,C7
subclavius is (small or large ?) muscle, which is located directly underneath the ____, running (vertically or horizontally?) .
Small
clavicle
Horizontally
Subclavius muscle affords some ______ to the underlying neurovascular structures (e.g in cases of clavicular fracture or other trauma).
minor protection
Subclavius
ORIGIN : ____ border of the junction of the ____ and _____
superior
first rib
it’s coastal cartilage
Subclavius
INSERTION: ____ surface of ____ of _____
inferior
middle
clavicle
Subclavius
ACTION: ____ and _____ the clavicle
anchors and depresses
Subclavius
INNERVATION : ____
On the brachial plexus, anterior or posterior??
___ and ___ roots
nerve to subclavius
Anterior
C5 and C6
Winging of the Scapula
If the _____ nerve is damaged and the serratus anterior therefore paralysed), a specific clinical sign is produced.
In cases such as this, the scapula is no longer held against the ____ and ____ out of the _____. It is said to have a ‘ ____’ appearance.
long thoracic
ribcage
protrudes
Back
winged
Long thoracic nerve palsy is thought to most commonly occur from _____ injuries, where the upper limb is ____ violently.
traction
stretched
The upper arm is located between the ____ joint and ____ joint.
shoulder
elbow
Upper arm contains ___ muscles
_____ in the anterior compartment and ___ in the posterior compartment
four
three
one
Muscles of the upper arm anterior compartment
____
_____
____
biceps brachii, brachialis, coracobrachialis
Muscles of the upper arm posterior compartment
???
triceps brachii
Arterial supply to the anterior compartment of the upper arm is via muscular branches of the ____ artery
brachial
Anterior compartment of upper arm muscles are all innervated by the ______ nerve.
On the brachial plexus, anterior or posterior??
Which roots??
musculocutaneous
Anterior
C5,C6,C7
Biceps brachii muscle has - heads
Triceps brachii muscle has - heads
2
3
the majority of the muscle mass of biceps brachii is located (anteriorly or posteriorly ?) to the ____
Anteriorly
humerus
Biceps brachii attached to the humerus
T/F
F
it has no attachment to the bone itself.
As the tendon of biceps brachii enters the forearm, a connective tissue sheet is given off – the ______
bicipital aponeurosis
bicipital aponeurosis forms the ____ of the cubital fossa and blends with the _____ of the anterior forearm.
roof
deep fascia
Biceps brachii
ORIGIN:
long head : _____ of _____
short head : ____ of ____
supreglenoid tubercle
scapula
coracoid process
scapula
Which is more lateral?
Short or long head of biceps brachii
Long head
Biceps brachii
INSERTION: ______
radial tuberosity
Biceps brachii
ACTION:
_____ of forearm
_____ arm at ____ and ____
supination
flexes
elbow and shoulder
The brachialis muscle lies (superficial or deep?) to the biceps brachii
Deep
Brachialis muscle is found more _____ than the other muscles of the arm.
distally
Brachialis muscle forms the ____ of the cubital fossa.
floor
Brachialis muscle
ORIGIN: ____ and _____ of _____
medial and lateral shaft
humerus
Brachialis muscle
INSERTION: ______ just distal to the _____ joint
ulna tuberosity
elbow
Brachialis muscle
ACTION: _____ at the ____
flexion
elbow
Brachialis muscle
INNERVATION : _____ nerve and ____ nerve
musculocutaneous
radial
Radial nerve
On the brachial plexus
Anterior or posterior
Which roots?
Posterior
C6,7,8
The coracobrachialis muscle lies ____ to the biceps brachii in the arm.
deep
Coracobrachialis
ORIGIN: _____ of _____
coracoid process
scapula
Coracobrachialis
INSERTION: _____ side of humerus at the level of _____
medial
deltoid tubercle
Coracobrachialis
ACTION: ____ of the arm at the ___ and strong or weak?) __uction
flexion
shoulder
Weak
add
A complete rupture of any tendon in the body is (common or rare?).
rare
the ____ head of the biceps brachii is one of the more common tendons to rupture.
This produces a characteristic sign when you _____ the elbow – a ___ where the muscle belly is, called the ‘ _____ Sign’. The patient would not notice much weakness in the upper limb due to the action of the ____ and ____ muscles.
long
Flex
bulge
Popeye
brachialis and supinator
Triceps brachii
The _____ head lies deeper than the other two, which cover it.
medial
Arterial supply to the posterior compartment of the upper arm is via the ______ artery.
profunda brachii
The profunda brachii artery
- also referred to as the ___ brachial artery
- is the ___ and _____ branch of the brachial artery.
- It originates from the ____ portion of the brachial artery
deep
First
largest
posterior
TRICEPS BRACHII
ORIGIN:
long head- ______
medial head- on the ______, (superior or inferior?) to the ____
lateral head- on the _____ , (superior or inferior?) to the ____
infraglenoid tubercle
humerus
Inferior
radial groove
humerus
Superior; radial groove
Triceps brachii
INSERTION : _____ of ____
olecranon of ulna
Triceps brachii
ACTION: _____ of the arm at the ____
extension
elbow
Triceps brachii
INNERVATION : _____ nerve
On the brachial plexus,
Anterior or posterior?
Which roots?
radial
Posterior
C6,7,8
In some individuals, the long head of the triceps brachii is innervated by the _____ nerve.
axillary
