Flashcards in Q&A Thoracic Limb Deck (114)
Describe the clavicle in the dog and cat
Cat: separate, nonarticular bone; Dog:rudimentary or absent, embedded in brachiocephalicus m
What does the spine of the scapula divide?
Lateral scapula into infraspinous and supraspinous fossae
What is the acromion?
End of the spine of the scapula
What is the caudal projection of the acromion found in the cat?
What is the glenoid fossa and its function?
Shallow cavity of the scapula articulating with the humerus to form the shoulder joint
What is the supraglenoid tubercle and what is its function?
cranial process near glenoid cavity for the attachment of the biceps brachii muscle
What and where is the greater tubercle?
Projection located craniolateral to the head of the humerus-point of shoulder
What is the intertubercular (bicipital) groove?
the sulcus between the greater and the lesser humeral tubercles for the biceps brachii tendon
What is the condyle of the humerus?
Entire distal end of the humerus
What arises from the epicondyles of the humerus?
Lateral: extensors of the forearm; medial: epicondyle flexer
What foramen is found in the canine and feline humeri, and what passes through them?
Dog: supratrochlear foramen - nothing; Cat: supracondylar foramen - median n., and brachial vessels
What and where is the styloid process of the radius?
Distal pointed end of the radius, medial
What is the function of the olecranon? That is the common name for it?
Serves as a lever arm for the extensor muscle of the elbow; point of elbow
Name the depression of the ulna that articulates with the humerus and its proximal and distal ends
Trochlear notch (semilunar notch); proximal end= anconeal process; distal end = medial and lateral coronoid process
What and where is the styloid process of the ulna?
Distal end of ulna, lateral side
List the parts of the manus from proximal to distal
Carpus, metacarpus, digits (proximal, middle, distal phalanges and associated sesamoid bones)
What does the term carpus designate?
Carpal bones and compound joint formed by these bones Or the region between the metacarpal bones and the forearm
Name the bones of the carpus and indicate where they are in each row
Proximal row from medial to lateral = radial, ulnar, accessory carpal bones; Distal row = 1-4 medial to lateral
Which carpal bone is located laterally and palmarily and considered a landmark?
Accessory carpal bone
List the bones of each digit and their locations
Proximal, middle and distal phalanges (no middle in dewclaw), 2 proximal sesamoid bones (1 in dewclaw on palmar side of metacarpophalangeal joints), 1 dorsal sesamoid bone for each digit 1-4
What is the fingerlike structure covering the ungual process?
What is the shelf of the distal phalanx covering the root of the claw?
What is the digit that doesn't reach the ground? made up of P1,P3, 1 proximal sesamoid, and MtC1
What is the configuration of the shoulder joint?
ball and socket joint (spheroidal)
What type of motion is allowed by the shoulder joint?
all movements but mainly flexion/extension
What protects the biceps tendon in the intertubercular groove?
Extension of the shoulder joint capsule acting as a tendon sheath
what stabilized the shoulder joint?
No true collateral ligaments, but infraspinatus tendon laterally and subscapularis tendon medially help stabilize it
What bones make up the elbow joint?
humeral condyle, trochlear notch of the ulna, head of radius
What type of joint is the elbow (cubital joint) and what action is allowed?
hinge (ginglymus) joint; compound joint; flexion and extension