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Mawad
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What are the functions of the thoracic limb?
weight-bearing and propulsion
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the trochlea lies _____ to the capitulum; it articulates with...
medially; radius and the ulna
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the capitulum lies _____ to the trochlea and articulates with...
laterally; the radius only
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the anconeal process occupies the _____ of the humerus when the elbow is extended.
olecranon fossa
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the trochlear notch is located _______ to the anconeal process.
distally
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what bony structures of the ulna are prone to fracture?
anconeal process, medial and lateral coronoid processes
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deltoideus originates at the _____.
acromion
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biceps brachii originates at the ______.
supraglenoid tubercle
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coracobrachialis originates at the _________.
coracoid process of the scapula
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the head of the humerus articulates with the _________.
glenoid tubercle
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which epicondyle is more prone to fracture?
lateral epicondyle (smaller)
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________ sits in the intertubercular groove.
the biceps brachi tendon
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which soft tissue structures pass through the supratrochlear foramen?
none
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the medial epicondyle provides origins for _______ of the antebrachium.
flexor muscles
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the lateral epicondyle provides origins for ______ of the antebrachium.
extensor
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unlike the canine humerus, the feline humerus has a ________.
supracondylar foramen (instead of a supratrochlear foramen)
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the feline supracondylar foramen is located ________ to where the canine supratrochlear foramen is located.
distomedially
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what soft tissue structures pass through the feline supracondylar foramen?
brachial artery and median nerve
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what is the purpose of the radius?
weight support
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what is the purpose of the ulna?
muscle attachment
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how are the radius and the ulna associated proximally?
the radius is lateral and the ulna is medial
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how are the radius and ulna associated distally?
the radius is medial and the ulna is lateral
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the accessory carpal bone is located ________.
laterally
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what is absent in digit I?
the middle phalanx
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the common digital extensor muscle inserts at...
the extensor processes on the ungual shelf of the distal phalanges of digits II-V
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what are the functions of the extrinsic muscles of the thoracic limb?
to move the body forward and backward, running
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the thoracic limb is attached to the body by _______, instead of a conventional joint.
synsarcosis
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the superficial pectoral muscle is innervated by _______; it has two parts...
cranial pectoral nerve; descending pec and transverse pec (transverse is caudal and deep to descending)
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the function of the superficial pectoralis is....
adduction
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the deep pectoral muscle is innervated by...
caudal pectoral nerve
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the functions of the deep pectoralis include...
pull trunk cranially, draw limb caudally, adduct the limb
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brachiocephalicus muscle is innervated by...
accessory nerve and ventral branches of cervical spinal nerves
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describe the brachiocephalicus muscle
- cleidobrachialis- distal to the clavicular tendon; inserts on the humerus
- cleidocervalicus- proximal to the clavicular tendon and superfcial to cleidomastoideus
- cleidomastoideus- proximal to the clavicular tendon and deep to cleidocervicalis
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sternocephalicus is innervated by...
the accessory nerve and ventral branches of cervical spinal nerves
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what are the two parts of the sternocephalicus and what is its function?
mastoid and occipital; to draw the head and neck to the side
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omotransversarius is innervated by...
accessory nerve
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what is the function of omotransversarius?
to advance the limb and flex the neck
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trapezius is innervated by...
accessory nerve
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what is the function of trapezius?
to elevate and abduct the limb
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rhomboideus is innervated by...
ventral branches of the cervical and thoracic spinal nerves
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what is the function of rhomboideus?
to elevate the limb and draw the scapula against the trunk
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what are the three parts of the rhomboideus muscle?
capitis (to head), cervicis, thoracis
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latissimus dorsi is innervated by...
thoracodorsal nerve
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what are the functions of latissimus dorsi?
digging, to flex the shoulder joint
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serratus ventralis is innervated by...
ventral branches of the cervical spinal nerves, the long thoracic nerve
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what is the function of serratus ventralis?
support the trunk and depress the scapula
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what are the parts of the serratus ventralis?
cervicis and thoracis
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what muscle is severed to remove the thoracic limb?
serratus ventralis
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the cutaneous trunci is innervated by...
lateral thoracic nerve
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what is the function of the cutaneous trunci?
to twitch the skin
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bony prominance located where the tricipital line of the humerus ends.
deltoid tuberosity
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