Overview of the Upper Limb
the upper limb is divided into ? segments. name them
4 - shoulder, arm (brachium), forearm (antebrachium), and hand (manus)
each segment of the upper limb is further divided into ?. provide 3 examples
regions - pectoral region, scapular region, deltoid region
Full screen
the glenohumeral joint is formed by the ? and the ?
head of the humerus, glenoid fossa of the scapula
how is the glenohumeral joint formed
the medial aspect of the humeral head is round and smooth and articulates with the concave
surface of the glenoid fossa
the lateral aspect of the proximal humerus has two bumps on it called ? and ?, with a groove
in between called the ?
greater and lesser tubercles, intertubercular groove
the intertubercular groove holds what structure
the long head of the biceps brachii muscle
the ? of the upper limb compartmentalizes and invests groups of muscles
deep fascia
? are extensions of deep fascia that form limb compartments, while each muscle is further
separated by ?
intermuscular septa, investing fascia
in the arm, there are ? and ? fascial compartments
anterior and posterior
muscles in the anterior compartment of the arm ? the elbow and muscles in the posterior
compartment ? the elbow
flex, extend
, in general, all of the muscles in a fascial compartment share a common ?
innervation
two causes of increased pressure within a muscular compartment
infection or injury
all of the muscles in the posterior compartment of the arm are innervated by the ? nerve
radial
increased pressure within a muscular compartment is an ? situation if untreated
emergent
increased pressure within a muscular compartment can eventually compress the ? to the
limb, resulting in ? and ?
blood supply, ischemia and necrosis
fasciotomy
a surgical incision through the fascia of a muscle compartment to relieve tension or pressure
region: anterior arm compartment
action
nerve
flexors of the shoulder and/or elbow
musculocutaneous nerve
region: posterior arm compartment
action
nerve
extensors of the elbow
radial nerve
region: anterior forearm compartment
action
nerves (2)
flexors of the wrist/digits
mostly median nerve, some ulnar nerve
region: posterior forearm compartment
the upper limb is divided into ? segments. name them
4 - shoulder, arm (brachium), forearm (antebrachium), and hand (manus)
each segment of the upper limb is further divided into ?. provide 3 examples
regions - pectoral region, scapular region, deltoid region
Full screen
the glenohumeral joint is formed by the ? and the ?
head of the humerus, glenoid fossa of the scapula
how is the glenohumeral joint formed
the medial aspect of the humeral head is round and smooth and articulates with the concave
surface of the glenoid fossa
the lateral aspect of the proximal humerus has two bumps on it called ? and ?, with a groove
in between called the ?
greater and lesser tubercles, intertubercular groove
the intertubercular groove holds what structure
the long head of the biceps brachii muscle
the ? of the upper limb compartmentalizes and invests groups of muscles
deep fascia
? are extensions of deep fascia that form limb compartments, while each muscle is further
separated by ?
intermuscular septa, investing fascia
in the arm, there are ? and ? fascial compartments
anterior and posterior
muscles in the anterior compartment of the arm ? the elbow and muscles in the posterior
compartment ? the elbow
flex, extend
, in general, all of the muscles in a fascial compartment share a common ?
innervation
two causes of increased pressure within a muscular compartment
infection or injury
all of the muscles in the posterior compartment of the arm are innervated by the ? nerve
radial
increased pressure within a muscular compartment is an ? situation if untreated
emergent
increased pressure within a muscular compartment can eventually compress the ? to the
limb, resulting in ? and ?
blood supply, ischemia and necrosis
fasciotomy
a surgical incision through the fascia of a muscle compartment to relieve tension or pressure
region: anterior arm compartment
action
nerve
flexors of the shoulder and/or elbow
musculocutaneous nerve
region: posterior arm compartment
action
nerve
extensors of the elbow
radial nerve
region: anterior forearm compartment
action
nerves (2)
flexors of the wrist/digits
mostly median nerve, some ulnar nerve
region: posterior forearm compartment
