Anat-Class Extrinsic Thoracic Limb.txt
Card Set Information
Anat-Class Extrinsic Thoracic Limb.txt
What are the functions of the thoracic limb?
weight-bearing and propulsion
the trochlea lies _____ to the capitulum; it articulates with...
medially; radius and the ulna
the capitulum lies _____ to the trochlea and articulates with...
laterally; the radius only
the anconeal process occupies the _____ of the humerus when the elbow is extended.
the trochlear notch is located _______ to the anconeal process.
what bony structures of the ulna are prone to fracture?
anconeal process, medial and lateral coronoid processes
deltoideus originates at the _____.
biceps brachii originates at the ______.
coracobrachialis originates at the _________.
coracoid process of the scapula
the head of the humerus articulates with the _________.
which epicondyle is more prone to fracture?
lateral epicondyle (smaller)
________ sits in the intertubercular groove.
the biceps brachi tendon
which soft tissue structures pass through the supratrochlear foramen?
the medial epicondyle provides origins for _______ of the antebrachium.
the lateral epicondyle provides origins for ______ of the antebrachium.
unlike the canine humerus, the feline humerus has a ________.
supracondylar foramen (instead of a supratrochlear foramen)
the feline supracondylar foramen is located ________ to where the canine supratrochlear foramen is located.
what soft tissue structures pass through the feline supracondylar foramen?
brachial artery and median nerve
what is the purpose of the radius?
what is the purpose of the ulna?
how are the radius and the ulna associated proximally?
the radius is lateral and the ulna is medial
how are the radius and ulna associated distally?
the radius is medial and the ulna is lateral
the accessory carpal bone is located ________.
what is absent in digit I?
the middle phalanx
the common digital extensor muscle inserts at...
the extensor processes on the ungual shelf of the distal phalanges of digits II-V
what are the functions of the extrinsic muscles of the thoracic limb?
to move the body forward and backward, running
the thoracic limb is attached to the body by _______, instead of a conventional joint.
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)
the function of the superficial pectoralis is....
the deep pectoral muscle is innervated by...
caudal pectoral nerve
the functions of the deep pectoralis include...
pull trunk cranially, draw limb caudally, adduct the limb
brachiocephalicus muscle is innervated by...
accessory nerve and ventral branches of cervical spinal nerves
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
sternocephalicus is innervated by...
the accessory nerve and ventral branches of cervical spinal nerves
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
omotransversarius is innervated by...
what is the function of omotransversarius?
to advance the limb and flex the neck
trapezius is innervated by...
what is the function of trapezius?
to elevate and abduct the limb
rhomboideus is innervated by...
ventral branches of the cervical and thoracic spinal nerves
what is the function of rhomboideus?
to elevate the limb and draw the scapula against the trunk
what are the three parts of the rhomboideus muscle?
capitis (to head), cervicis, thoracis
latissimus dorsi is innervated by...
what are the functions of latissimus dorsi?
digging, to flex the shoulder joint
serratus ventralis is innervated by...
ventral branches of the cervical spinal nerves, the long thoracic nerve
what is the function of serratus ventralis?
support the trunk and depress the scapula
what are the parts of the serratus ventralis?
cervicis and thoracis
what muscle is severed to remove the thoracic limb?
the cutaneous trunci is innervated by...
lateral thoracic nerve
what is the function of the cutaneous trunci?
to twitch the skin
bony prominance located where the tricipital line of the humerus ends.