CHP 4 - mYOLOGY Flashcards
Voluntary striated muscle responsible for movement
Skeletal muscle
Involuntary non-striated muscle found in internal organs
Smooth muscle
Involuntary striated muscle found in the heart
Cardiac muscle
Connective tissue surrounding individual muscle fibers
Endomysium
Connective tissue surrounding bundles of muscle fibers
Perimysium
Outer connective tissue layer surrounding the entire muscle
Epimysium
Muscle fibers arranged in parallel
Strap muscle
Muscle fibers tapering at both ends
Fusiform muscle
Muscle fibers arranged obliquely like a feather
Pennate muscle
Muscle attachment using tendons
Tendinous attachment
Muscle attachment using a flat sheet of connective tissue
Aponeurotic attachment
Direct attachment of muscle to bone
Fleshy attachment
Fixed attachment site of a muscle
Origin
Movable attachment site of a muscle
Insertion
Muscle on the side of the limb toward which a joint bends
Flexor
Muscle on the opposite side of the flexor muscle
Extensor
Muscle that pulls a limb toward the median plane
Adductor
Muscle that moves a limb away from the median plane
Abductor
Muscle surrounding an opening either striated or smooth
Sphincter
Muscle between the skin and deeper muscles allowing skin movement
Cutaneous muscle
Encloses a synovial joint containing synovial fluid
Joint capsule
Synovial sac between a tendon or ligament and a bony prominence
Bursa
Elongated bursa surrounding a tendon reducing friction
Synovial sheath
Outer layer of a synovial sheath
Exotendon
Inner layer of a synovial sheath
Endotendon
Connective tissue connecting the inner and outer layers of a synovial sheath
Mesotendon
Bursa between the tendon of infraspinatus and the caudal part of the greater tubercle of the humerus
Infraspinatus bursa
Bursa under the biceps tendon between the greater and lesser tubercles of the humerus
Intertubercular bursa
Bursa over the olecranon tuber
Subcutaneous olecranon bursa
Bursa between the deep flexor tendon and the navicular bone
Navicular bursa
Common sheath enclosing tendons of superficial and deep flexors
Carpal sheath
Sheath enclosing deep and superficial flexor tendons
Digital sheath
Bursa between the accessory gluteal muscle and the greater trochanter
Trochanteric bursa
Bursa between the calcanean tuber and the superficial digital flexor tendon
Subtendinous calcanean bursa
Muscles connecting the limb to the trunk including trapezius latissimus dorsi and pectorals
Extrinsic muscles of the thoracic limb
Muscles within the limb acting on joints such as deltoid supraspinatus and infraspinatus
Intrinsic muscles of the thoracic limb
Muscle extending from the forelimb to the head involved in limb protraction
Brachiocephalicus
Muscle responsible for elevating and moving the scapula
Trapezius
Muscle responsible for retracting the forelimb
Latissimus dorsi
Shoulder muscle responsible for flexion and abduction
Deltoideus
Shoulder muscle acting as an extensor
Supraspinatus
Shoulder muscle assisting in flexion and stabilization
Infraspinatus
Adductors of the shoulder
Pectoral muscles
Extensor of the elbow
Triceps brachii
Flexor of the elbow
Biceps brachii
Muscle involved in pronation of the forearm
Pronator teres
Flexor of the carpus
Flexor carpi radialis
Flexor of the carpus
Flexor carpi ulnaris
Extends the digits
Common digital extensor
Flexes the digits
Deep digital flexor
Interosseous muscle in horses that supports the fetlock
Suspensory ligament
Small superficial muscle overlying the extensor carpi radialis in carnivores
Brachioradialis
Area bounded by sartorius pectineus and the body wall site for pulse taking in carnivores
Femoral triangle
Contains the femoral artery vein saphenous nerve and deep inguinal lymph nodes
Femoral canal
Most powerful muscle responsible for closing the jaw
Masseter
Muscle aiding in jaw closure
Temporalis
Muscle assisting in jaw closure
Pterygoideus
Muscle that opens the mouth
Digastricus
Circular muscle around the eye involved in blinking
Orbicularis oculi
Muscle assisting in chewing by moving food inside the mouth
Buccinator
Group of epaxial muscles extending the vertebral column
Longissimus system
Epaxial muscles involved in extending and stabilizing the vertebral column
Transversospinalis system
Lateral epaxial muscles involved in back extension
Iliocostalis system
Major flexor of the vertebral column
Rectus abdominis
Fibrous structure formed by the joining of abdominal muscle aponeuroses
Linea alba
Primary muscle of respiration
Diaphragm
Muscles assisting in inspiration
External intercostal muscles
Muscles assisting in expiration
Internal intercostal muscles
Area bounded by sartorius pectineus and the body wall site for pulse taking in carnivores
Femoral triangle