Lab Exam 3: Cat Muscles Flashcards by Emily Foster

What is 1?

Median Raphe

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What is 2? origin, insertion, action?

-Digastric
Origin: From the mastoid and jugular processes
Insertion: Medial ventral border of the mandible
Action: Depresses the mandible

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What is 1 and 4?

Mylohyoid

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What is 9?

Serratus ventralis

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What is 3?

Trapezius

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What is 2?

Trapezius

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What is 1?

Gastrocnemius

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Which of these numbers are flexors?

3,4,6

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Which is an extensor?

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What are muscles 1 and 2 considered?

Hamstrings

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What muscles are these?

Quadriceps

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What is 11?

Sternohyoid

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What is a 2? Origin, Insertion, action?

Longissimus Dorsi
Origin: From the ilium and spinous processes
Insertion: more anterior vertebrae
Action: Extends the vertebral column

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What muscle is this? Origin, insertion, action

Temporalis
Origin: Most fibers originate from the temporal bone and a few from the zygomatic arch
Insertion: Coronoid process of the mandible
Action: Elevates mandible

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What muscle is this?

Quadriceps

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What is 1?

Digastric

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What is 2?

Mylohyoid

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What is 2? Origin, insertion, action

Gluteus Maximus
Origin: Last sacral and first caudal vertebrae
Insertion: femur
Action: Abducts the thigh

Which are flexors?

5,8

What is 6?

Rectus abdominis

What is 6? origin, insertion, action?

Gastrocnemius
Origin: (1) Patella (2) femur
Insertion: Achilles tendon
Action: Extends the pes

Which are extensors?

2,3,4

What is 9? Origin, insertion, action

-Rectus Abdominis
-Origin: Pubis
Insertion: First and second costal cartilage and cranial end of sternum
Action: Compresses the abdominal region, pulls sternum and ribs caudally, causing flexion of the trunk

What is 1?

Latissimus Dorsi

What is 2? origin, insertion, action

Masseter Origin: From the zygomatic arch Insertion: Masseteric fossa and adjacent portions of the mandible Action: Elevation of mandible

Which are extensors?

3,4,5,7,9,14,16,18,19

Which are flexors?

6,8,17

What is 1?

Biceps

What is 4? Origin, insertion, action

Latissimus dorsi Origin: fourth or fifth thoracic to the sixth lumbar vertebrae Insertion: humerus at the proximal end Action: Pulls forelimb dorsocaudally

What is 1?

Masseter

What is 4? Origin, insertion, action

Serratus Ventralis Origin: From the surface of the first 9 or 10 ribs and the transverse processes of the last five cervical vertebrae Insertion: Vertebral border of the scapula Action: Draws the scapula toward the thoracic wall and helps to support the scapula

What is 5?

Triceps

What is 3? Origin, insertion, action

Mylohyoid Origin: Medial surface of the mandible Insertion: Median raphe Action: Elevates the floor of the mouth

What is 5? Origin, insertion, action

Sternohyoid Origin: First costal cartilage Insertion: Hyoid bone Action: Retracts the hyoid

Biceps Femoris (OIA)

Subunit of Hamstrings Origin: Ischial tuberosity Insertion: Tibia and patella Action: Abducts thigh and flexes the shank

Rectus Femoris (OIA)

Subunit of Quadriceps Origin: Ilium near the acetabulum Insertion: In common with the vastus medialis and lateralis Action: Extends the shank

Semimembranosus (OIA)

Subunit of hamstring Origin: Ischial tuberosity and adjacent area of the ischium Insertion: Medial epicondyle of the femur and adjacent medial surface of the tibia Action: Extends the thigh

Semitendinosus (OIA)

Subunit of Hamstrings Origin: Ischial tuberosity Insertion: Tibia Action: Flexes the shank

Vastus Intermedius (OIA)

Subunit of Quadriceps Origin: Femur Insertion: In common with the other three members of this complex Action: Extends the shank

Vastus Lateralis (OIA)

Subunit of Quadriceps

Vastus Medialis (OIA)

Subunit Quadriceps Origin: Femur Insertion: Crosses the patella and inserts by means of the patellar ligament on the tibial tuberosity Action: Extends the shank

What does the quadriceps include?

Rectus femoris Vastus medialis Vastus intermedius Vastus lateralis

What muscles does the hamstrings include?

Biceps Femoris Semimembranosus Semitendinosus