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Anatomy of Domestic Animals Muscles
Terms in this set (66)
Attaches thoracic limbs to the rest of the body
Flexes the shoulder and pulls the animal forward
Keeps the forelimbs underneath the body
Elevates and abducts the forelimb
Serrated muscle that acts like a sling to support the body underneath the forelimbs
Underneath the trapezius. Draws shoulders dorsocranially
Muscles in the limbs
Heart shaped muscle that abducts and flexes the shoulder
Caudal part of the scapular spine. Flexes shoulder joint
Cranial part of the scapular spine. Extends shoulder joint
Medial side, under the supraspinatus, flexes the shoulder
Medial side. Adducts and extends shoulder
4 heads in carnivores. Straightens the elbow
The popeye muscle. Flexes elbow joint
Connects to the radius. Flexes elbow
Looser muscle in the forearm. Supinates paw
Extensor Carpi Radialis
Connects to metacarpals 2 and 3. Extends carpus, flexes elbow
Common digital extensor
Extends carpus and digits
Lateral digital extensor
extends digits 3,4,5 (dog). 2,3,4,5 (cat). 4 (ruminant). Lateral proximal phalanx in horse
Only flexor on lateral side of forearm. Flexes carpal joint.
Flexor Carpi Ulnaris
Connects to the elbow
Superficial digital flexor
Thickest muscle on forearm. Flexes digits and carpus
Flexor Carpi Radialis
Middle of the medial forearm
Pronates the paw
Supinates the paw
Deep digital flexor
Flexes the digits and carpus. Stay apparatus in Horse
Oblique carpal extensor
wraps around extensor carpi radialis. extends carpus and abducts 1st digit in carnivores.
broad fibrous connective tissue that attaches some muscle to bone or other muscles
Origin of muscle
The more stable of the attachment sites of a muscle
Insertion of muscle
The more movable attachment site of a muscle
The muscle directly responsible for producing the desired action
The muscle that opposes the action of the agonist
A muscles that oppose any undesired action of agonist. They assist the agonist
Connective tissue that encircles group of muscle fibers forming a fascicle
Connective tissue that surrounds each muscle fiber (cell)
Connective tissue that encircles all the fascicles to form a complete muscle
cutaneous muscle located on head and neck
muscle that covers most of the dorsal lateral and ventral thoracic and abdomen. Present in all domestic species, but absent in man
cutaneous muscle is best developed in horses. It arises from sternum and spreads up the neck over caudal part of the external jugular vein
large muscle that is making up cheek region. It elevates the mandible to close the mouth when chewing
thin superficial muscle lies on the ventral caudal edge of mandible. IT opens the mouth
What is the only intrinsic muscle abducting (pulling apart) the vocal folds to open the glottis.
muscle runs from arm to head. Pulls the limb forward and depresses and pulls head and neck laterally. IT is a compound Y shaped muscle with three parts in carnivores, ruminants and pigs. In horse muscle consist of only two parts.
What muscle forms along with the brachiocephalicus, the jugular groove in horse and ruminants.
External abdominal oblique
What is the outermost layer of muscles covering the abdomen called? Its fibers run in a caudoventral direction.
Internal abdominal oblique
Middle layer of muscles covering the abdomen. Its fibers run cranioventral.
Deepest layer of muscles in the abdomen. Its fibers run transversely, dorsoventrally
What muscle consists of two long straight muscles extending from the sternum along the ventral abdomen on either side of the linea alba to the prepuce tendon
the narrow strip of fascia, it
connects the two rectus abdominis muscles and is
made of the insertions of the other abdominal muscles called?
Tensor fasciae latae
triangular shaped muscle that radiates over the quadriceps and inserts with the biceps femoris on the lateral femoral fasciae (fascia lata). It's action is to flex the hip joint and extend the stifle
What muscles are extensors muscles of the hip joint. They help propel the body forward by extending the hip joint (pulling the leg backward). They also abduct the hip
bicep femoris, semimembranosis, semitendinosis
three muscles extend the hip joint (pulling leg backward) and are the main flexors of the stifle joint. They propel the animal forward when it walks or runs.
one of the medial muscles of the thigh that are primarily adductors of the rear leg. (May also have some action on the hip or stifle joint)
What muscle is the main extensor of the stifle joint. When as animal has taken a stride this muscle helps bring the leg forward to prepare for the next stride. It has four heads
rectus femoris, vastus lateralis, vastus medialis, vastus intermedius
What are the four heads of the Quadriceps femoris muscle?
cranial tibial muscle
What is the most cranial muscle of distal limb. Its origin is the cranial tibial border and its insertion is on the proximal metatarsal 1 and 2 (plantar side) Its action is to flex the tarsal joint.
long digital extensor
What is the spindle shaped muscle that lies lateral to cranial tibial and is partly covered by it. It divides into 4 tendons. It extends digital joint, flexes the tarsal joint and extends the stifle joint.
What muscle lies caudal and lateral to long digital extensor. It origin is on the proximal end of tibia and fibula. Its insertion is on the fourth tarsal bone and the plantar aspect of the base of the metatarsals. It flexes the tarsal joint
Name two muscle that are involved in inspiration?
diaphragm, external intercostal
Name two expiratory muscles?
internal intercostal, caudal serratus dorsalis
What are the muscles of back dorsal to transverse processes of the vertebrae called?
What are the muscles of back ventral to transverse processes of the vertebrae called?
What is the most lateral column of the epaxial muscle extending in overlapping bundles called?
What is the wall and associated structures closing the pelvic outlet and surrounding the anal and urogenital canals called?
What muscle is absent in dog but present in cat. Its origin is on the head of fibula. Its insertion is on the tendon of lateral Head of gastrocnemius muscle. It extends tarsus
What muscles is the most superficial muscle of caudal leg . It has two heads each of which has a sesamoid bone embedded near its origin. It is equivalent to our calf muscle. It is a powerful extensor muscle of the hock. It helps propel the body forward as an animals takes a stride.
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