Shared Flashcard Set

Details

Canine Anatomy
Thoracic Limb and Thorax
161
Anatomy
Professional
09/25/2011

Additional Anatomy Flashcards

 


 

Cards

Term
A typical long bone consists of:
Definition
-Epiphysis
-Epiphyseal plate (growth plate)
-Metaphysis
-Diaphysis
Term
Function of the skeleton
Definition
-Support the body
-Protect soft tissue
-Provide a system of levels for locomotion
Term
The appendicular skeleton is composed of:
Definition
Thoracic limb, pelvic limb
Term
The axial skeleton is composed of:
Definition
Vertebra, rib, sternum, skull
Term
The splanchnic or visceral skeleton consists of:
Definition
os penis, os cordis
Term
Name the three types of joints
Definition
Fibrous, Cartilaginous, synovial
Term
What is a fibrous joint?
Definition
United by fibrous connective tissue (skull)
Term
What is a cartilaginous joint?
Definition
United by cartilage (vertebral bodies)
Term
What is a synovial joint?
Definition
"true joints" that allow for the most movement, commonly involved in dislocation (shoulder, knee)
Term
Function of muscle
Definition
movement, heat generation from shivering
Term
List the three types of muscles
Definition
Cardiac, smooth, skeletal
Term
What is cardiac muscle?
Definition
heart muscle
Term
What is smooth muscle?
Definition
Muscle of the blood vessels and viscera
Term
What is skeletal muscle?
Definition
Responsible for movement, and also organs such as the tongue and eye
Term
What are the nerve anatomical categories?
Definition
Central nervous system, peripheral nervous system
Term
What are the nerve functional categories?
Definition
Somatic nervous system, autonomic nervous system
Term
What is the function of the thoracic limb?
Definition
Weight bearing and propulsion
Term
What attaches to the supraspinous fossa of the scapula?
Definition
supraspinatus m
Term
What attaches to the infraspinous fossa?
Definition
infraspinatus m
Term
What attaches to the acromion?
Definition
deltoideus m
Term
What attaches to the supraglenoid tubercle?
Definition
Biceps brachii m
Term
What attaches to the coracoid process?
Definition
coracobrachialis m
Term
What attaches to the subscapular fossa?
Definition
subscapularis m
Term
The lateral epicondyle of the humerus provides origins for which muscles?
Definition
The extensor muscles for the carpus and digit
Term
What three processes are prone to fracture on the ulna?
Definition
Anconeal process, lateral coronoid process, and medial coronoid process
Term
What innervates the pectoral muscles?
Definition
pectoral n
Term
What innervates the brachiocephalicus m?
Definition
-Accessory nerve
-ventral branches of the cervical spinal n
Term
What innervates the sternocephalicus m?
Definition
-Accessory nerve
-ventral branches of the cervical spinal n
Term
What innervates the omotransversarius m?
Definition
accessory n
Term
What innervates the trapezius m?
Definition
accessory n
Term
What innervates the rhomboideus m?
Definition
Ventral branches of the cervical and thoracic spinal nerves
Term
What innervates the latissimus dorsi?
Definition
thoracodorsal n
Term
What innervates the serratus ventralis m?
Definition
Ventral branches of the cervical and thoracic spinal nerves (long thoracic n)
Term
What innervates the cutaneous trunci?
Definition
lateral thoracic n
Term
What four muscles are innervated by the accessory nerve?
Definition
Brachiocephalicus m, sternocephalicus m, omotransversarius m, trapezius m
Term
What four muscles are innervated by the cervial spinal nerves?
Definition
Brachiocephalicus m, sternocephalicus m, rhomboideus m, and serratus ventralis
Term
What two muscles are innervated by the thoracic spinal nerves?
Definition
rhomboideus m, and serratus ventralis
Term
What two muscles are innervated by the accessory nerves and the ventral branches of the cervical spinal nerves?
Definition
Brachiocephalicus m, and sternocephalicus m
Term
What are the three parts of the brachiocephalicus?
Definition
Cleidobrachialis, cleidocervicalis, cleidomastoideus
Term
How do the extrinsic muscles join the axial skeleton?
Definition
synsarcosis
Term
What is the action of the pectoral m?
Definition
adduction
Term
What is the action of the sternocephalicus m?
Definition
draw the head/neck to the side
Term
What is the action of the brachiocephalicus m?
Definition
advance the limb
Term
What is the action of the omotransversarius m?
Definition
-advance the limb
-flex the neck
Term
What is the action of the trapezius m?
Definition
-elevate limb
-abduction
Term
What is the action of the rhomboideus m?
Definition
-elevate limb
-draw scapula against the trunk
Term
What is the action of the latissimus dorsi m?
Definition
-digging
-flex the shoulder joint
Term
What is the action of the cutaneous trunci m?
Definition
twitch the skin
Term
What is the action of the serratus ventralis m?
Definition
-support the trunk
-depress the scapula
Term
What innervates the deltoideus m?
Definition
axillary n
Term
What innervates the suprapinatus m?
Definition
suprascapular n
Term
What innervates the infraspinatus m?
Definition
suprascapular n
Term
What innervates the teres minor m?
Definition
axillary n
Term
What innervates the subscapularis m?
Definition
subscapular n
Term
What innervates the teres major m?
Definition
axillary n
Term
What innervates the coracobrachialis m?
Definition
musculocutaneous n
Term
What innervates the tensor fascia antebrachii m?
Definition
radial n
Term
What innervates the triceps brachii m?
Definition
radial n
Term
What innervates the anconeus m?
Definition
radial n
Term
What innervates the biceps brachii m?
Definition
musculocutaneous n
Term
What innervates the brachialis m?
Definition
musculocutaneous n
Term
The musculocutaneous n innervates which muscle(s)?
Definition
-Biceps brachii m
-Brachialis m
-Coracobrachialis m
Term
The radial n innervates which muscle(s)?
Definition
-Tensor fascia antebrachii
-Triceps brachii m
-Anconeus m
-Extensor muscles of the antebrachium
Term
What is the origin of the supraspinatus m?
Definition
supraspinous fossa
Term
What is the insertion of the supraspinatus m?
Definition
Greater tubercle of the humerus
Term
What is the action of the deltoideus m?
Definition
flexion of the shoulder joint
Term
What is the action of the supraspinatous m?
Definition
extend and stabilize shoulder joint
Term
What is the action of the infraspinatus m?
Definition
stabilize the shoulder joint
Term
What is the action of teres minor m?
Definition
flex, rotate the limb laterally
Term
What is the action of the subscapularis m?
Definition
adduct, stabilize, extend
Term
What is the action of teres major?
Definition
flex, rotate medially
Term
What is the origin of teres major m?
Definition
The caudal angle of the scapula
Term
What is the insertion of teres major m?
Definition
teres major tuberosity of the humerus
Term
What is the action of the coracobrachialis m?
Definition
adduct, extend, stabilize
Term
What is the action of the subscapularis m?
Definition
adduct, stabilize, rotate medially, extend
Term
What is the action of the tensor fascia antebrachii m?
Definition
extension of the elbow joint
Term
What is the action of the triceps brachii m?
Definition
extend the elbow joint, flex shoulder joint (long head)
Term
What are the four parts of the triceps brachii?
Definition
Long head, medial head, lateral head, and accessory head
Term
What is the origin of the triceps brachii?
Definition
from the caudal border of the scapula to the proximal one third of the humerus
Term
What is the insertion of the triceps brachii?
Definition
Olecranon tuberosity on the ulna
Term
What is the action of the anconeus?
Definition
extend the elbow joint
Term
What is the origin of the biceps brachii m?
Definition
supraglenoid tubercle on the scapula
Term
What is the insertion of the biceps brachii m?
Definition
ulnar and radial tuberosities
Term
What does the shoulder tendon pass through?
Definition
The intertubercular groove of the proximal end of the humerus
Term
What holds the shoulder tendon in place in the intertubercular groove of the humerus?
Definition
transverse humeral retinaculum
Term
What are the lateral muscles of the scapula and shoulder?
Definition
deltoideus m, supraspinatus m, infraspinatus m, and teres minor m
Term
What are the medial muscles of the scapula and shoulder?
Definition
subscapularis m, teres major m, and coracobrachialis m
Term
What are the caudal muscles of the arm?
Definition
tensor fascia antebrachii m, triceps brachii m, and anconeus
Term
What are the cranial muscles of the arm?
Definition
biceps brachii m, and brachialis m
Term
The axillary n innervates which muscle(s)?
Definition
Deltoideus m, teres minor m, and teres major m
Term
The suprascapular n innervates which muscle(s)?
Definition
supraspinatus and infraspinatus
Term
Name the cranial and lateral muscles of the forearm.
Definition
-extensor carpi radialis m
-common digital extensor m
-lateral digital extensor m
-ulnaris lateralis m
-supinator m
-abductor pollicis longus m
Term
What is the origin and innervation of the cranial and lateral muscles of the forearm?
Definition
Origin: lateral epicondyle of the humerus
Innervation: radial nerve
Term
What is the action of the cranial and lateral muscles of the forearm?
Definition
extend the carpus and digits
Term
What is the insertion of the flexor carpi radialis m?
Definition
base of metacarpals II and III
Term
What is the insertion of the common digital extensor m?
Definition
extensor process of the distal phalanges
Term
What is the action of the supinator m?
Definition
rotate the arm laterally, flex the elbow
Term
What is the action of the Abductor pollicis longus m?
Definition
Abduct pollex (digit I) and extend carpus
Term
What innervates the caudal and medial muscles of the forearm?
Definition
Median and ulnar nn
Term
What is the origin of the medial and caudal muscles of the forearm?
Definition
medial epicondyle of the humerus
Term
What is the action of the medial and caudal muscles of the forearm?
Definition
flex the carpus and digits
Term
What are the medial and caudal muscles of the forearm?
Definition
-flexor carpi radialis m
-flexor carpi ulnaris m
-superficial digital flexor m
-deep digital flexor m
-pronator teres m
-pronator quadratus m
Term
What is the insertion of the flexor carpi ulnaris?
Definition
accessory carpal bone
Term
What is the insertion of the superficial digital flexor?
Definition
palmar surface of the base of the middle phalanges
Term
What are the three heads of the deep digital flexor m?
Definition
humeral, ulnar, radial
Term
What is the insertion of the deep digital flexor m?
Definition
palmar surface of the base of the distal phalanges
Term
What is the action of the pronator teres m?
Definition
rotate the arm medially, flex the elbow
Term
What is the action of the pronator quadratus m?
Definition
pronate the paw
Term
What is the origin of the 4 interossei?
Definition
base of the metacarpal bones, and carpal joint capsule
Term
What is the insertion of the interossei?
Definition
base of the proximal phalanx
Term
What innervates the interossei m?
Definition
ulnar n
Term
What is the action of the interossei?
Definition
flexor of metacarpophalangel joint
Term
Why is elbow luxation uncommon in the dog?
Definition
The anconeal process projects into the olecrenon fossa
Term
What artery of the thoracic limb arises from the subclavian a?
Definition
axillary a
Term
What are the major branches of the axillary a?
Definition
-Subscapular (thoracodorsal to the latissimus dorsi
-Caudal circumflex humeral a wraps around humerus)
-Cranial circumflex humeral a (wraps humerus)
Term
What are the major branches of the brachial a?
Definition
-Collateral ulnar (runs around olecrenon to medial surface of elbow)
-Superficial brachial (runs cranially toward brachium)
-Transverse cubital (runs to elbow joint)
-Common interosseus (dives between radius and ulna)
Term
What is the major branch of the median a?
Definition
Radial (comes off cranially to paw)
Term
What are the lymph nodes of the thoracic limb and their locations?
Definition
-Superficial cervical ln (under omo)
-Axillary ln (armpit)
Term
What nerves innervate the thoracic wall muscles?
Definition
Thoracic spinal nerves
Term
What direction do the external intercostal muscles run?
Definition
caudoventrally
Term
What direction do the fibers of the internal intercostal muscles run?
Definition
cranioventrally
Term
What are the dorsal arteries of the thorax?
Definition
-Aorta
-costocervical trunk
Term
What are the ventral arteries of the thorax?
Definition
internal thoracic a (which gives rise to the intercostal aa)
Term
What is the dorsal vein of the thorax into which the intercostal arteries drain?
Definition
azygos (on right side)
Term
What is the ventral vein of the thorax into which the intercostal arteries drain?
Definition
internal thoracic v
Term
What is the lymph node located at the bifurcation of the brochi?
Definition
Tracheobronchial ln
Term
Where are the lymph nodes located near the transversus thoracic?
Definition
Sternal and intercostal lymph nodes
Term
What are the 3 openings of the diaphragm?
Definition
Aortic hiatus, esophageal hiatus, and the foramen vena cava
Term
What penetrates the diaphragm via the aortic hiatus?
Definition
Aorta, azygos v, and the thoracic duct
Term
What penetrates the diaphragm via the esophageal hiatus?
Definition
Esophagus and its vessels, and the vagal nerve trunk
Term
What penetrates the diaphragm via the foramen vena cava?
Definition
The caudal vena cava
Term
What connects the costal pleura to the underlying muscle?
Definition
Endothoracic facia
Term
Where would you do a thoracocentesis?
Definition
-In the costodiaphragmatic recess, between the 6-8 intercostal spaces
Term
Where is the cardiac notch? What side of the heart would you be puncturing?
Definition
-Between the cranial and middle lobes of the right lung, at the 4-5 intercostal spaces
-Right ventricle
Term
What is the term for the area on the lung where the root enters?
Definition
Pulmonary hilus
Term
What side of the heart is the auricular surface?
Definition
Left
Term
What separates the heart ventricles on the left side?
Definition
Paraconal interventricular groove
Term
What side of the heart is the atrial surface?
Definition
right
Term
what separates the ventricles on the right side of the heart?
Definition
subsinuosal interventricular groove
Term
Which muscles are involved in inspiration, and in which direction do the fibers run?
Definition
fibers run caudoventrally!
-Diaphragm
-External intercostal m
-Serratus dorsalis cranialis
-scalenus
-rectus thoracis
Term
Which muscles are involved in expiration, and in which direction do the muscle fibers run?
Definition
Fibers run cranioventrally!
-Abdominal muscles
-internal intercostal m
-serratus dorsalis caudalis
-rectus thoracis
Term
What are the levels of the pericardium, from outer to inner?
Definition
-fibrous pericardium
-serous parietal layer
-serous visceral layer
Term
What is the ligamentum arteriosum?
Definition
connects pulmonary trunk and aorta
Term
Where is the fossa ovale (foramen ovale) found?
Definition
right atrium
Term
Where is the valve of the foramen ovale found?
Definition
Left atrium
Term
What is the precursor for the ligamentum arteriosum?
Definition
ductus arteriosus
Term
What is the disease when the ductus arteriosus doesn't close after week 1?
Definition
patent ductus artereosus
Term
What are the valves of the heart?
Definition
-Left and right atrioventricular valves
-aortic valve
-pulmonary valve
Term
In which part of the heart are the pectinate mm? What do they look like?
Definition
Auricles; branches on the tree, very stringy along the surface
Term
In which part of the heart are the papillary muscles? What do they look like?
Definition
Ventricles; hot dogs
Term
In which part of the heart are the cordae tendinae?
Definition
ventricles
Term
What does the cordae tendinae do?
Definition
Connects papillary muscles to the cusps of the valves
Term
In which part of the heart are the trabeculae carneae? What do they look like?
Definition
Ventricles; depressions
Term
In which part of the heart is the crista terminalis? What does it do?
Definition
Auricles; give rise to the pectinate muscles
Term
What extends from the septal wall to the parietal wall of the ventricles?
Definition
Trabecula septomarginalis (moderator band)
Term
What is the role of the trabecula septomarginalis?
Definition
ensure ventricles are in synch
Term
What are the branches of the ascending aorta?
Definition
left and right coronary arteries
Term
What are the two major branches off the aortic arch?
Definition
-brachiocephalic trunk
-left subclavian
Term
What are the major branches off the brachiocephalic trunk?
Definition
-Left common carotid
-Right common carotid
-Right subclavian
Term
What is it called when the right and left common carotid aa leave the brachiocephalic trunk together?
Definition
Bicarotid trunk
Term
What are the branches off the right/left subclavian a?
Definition
-vertebral a
-costocervical trunk (deep cervical a, deep scapular a)
-internal thoracic a
-superficial cervical a
Supporting users have an ad free experience!