Mink Dissection

Practice Practical

Identify the muscle labeled #1.What is the common name for this muscle?

• Rectus femoris• Common Name: Quadriceps; thigh

Identify the muscle labeled #1.What is the common name for this muscle?

Identify muscle #2.Does this muscle adduct or abduct the

thigh?

Identify muscle #2.Does this muscle adduct or abduct the thigh?

• Gracilis• Adducts the thigh.

Identify muscle #3.In humans, this name is slightly different.

What is it?

Identify muscle #3.In humans, this name is slightly different. What is it?

• Sternomastoid• Sternocleidomastoid

Identify muscle #4.

Identify muscle #4.

• Serratus Ventralis

Identify this lifted structure #5. What organ system is it part of?

Identify this lifted structure #5. What organ system is it part of?

• External Jugular Vein• Cardiovascular System

Identify this muscle #6.What is its overall function?

Identify this muscle #6.What is its overall function?

• Masseter• Closes or lifts the jaw

This muscle’s origin is the zygomatic process. What bone is its insertion?

This muscle’s origin is the zygomatic process. What bone is its insertion?

• mandible

Identify muscle #7 (lifted on back).

Identify muscle #7 (lifted on back).

• Latissimus dorsi

Identify this muscle #8.What is its function?

Identify this muscle #8.What is its function?

• Pectoralis major• Adducts forelimbs/arm

Identify this muscle #9.In humans, what is the opposing muscle on the anterior side?

Identify this muscle #9.In humans, what is the opposing muscle on the anterior side?

• Gastrocnemius• Tibialis anterior

Identify this lifted structure #10 in the neck region.

Identify this lifted structure #10 in the neck region.

• Mandibular gland

Identify the muscle marked 11.Identify the related structure marked “A”

Identify the muscle marked 11.Identify the related structure marked “A”

• Clavobrachialis• Brachialis

Identify this muscle #12 (ventral side of leg).

Another View of #12.Identify this muscle.

Identify this muscle #12.

• Vastus medialis

Identify this muscle #13 (lifted).

Identify this muscle #13. (lifted)What bone is its insertion?

Close-up of 13

Identify this muscle #13. (lifted)What bone is its insertion?

• Acromiotrapezius• Scapula

Identify this muscle #14. (lifted)What is its function?

Close up of 14

Identify this muscle #14. (lifted)What is its function?

• Spinotrapezius• Rotates scapula back or abducts forelimb

Identify this muscle #15.What is the common name for this muscle in a human?

Identify this muscle #15.What is the common name for this muscle in a human?

• Biceps femoris• hamstring

Identify this muscle #16.What muscle lies deep and inferior to it?

What is the function of both?

Identify this muscle #16.What muscle lies deep and inferior to it?

What is the function of both?

• Tensor fascia lata(e)• Vastus lateralis is deep and inferior• They extends or abducts hind-limb or leg

Identify this muscle #17.

Identify this muscle #17.

• Pectoralis minor

Identify this muscle #18 of the neck. (Extra Credit)

Close-Up of 18

Identify this muscle #18 of the neck. (Extra Credit)

• splenius

Identify this muscle #19. (Extra Credit)

Identify this muscle #19. (Extra Credit)

• Atlantoscapularis

What is the muscle labeled “B”? (found ventral to the acromiotrapezium and extends deep into the clavotrapezius)

What is the muscle labeled “B”? (found ventral to the acromiotrapezium and extends deep into the clavotrapezius)

• Levator scapula(e)

Identify this muscle #20.

Identify this muscle #20.

• Vastus lateralis

Identify this muscle #21.How is the position or location of this muscle different in a human?

Identify this muscle #21.How is the position or location of this muscle different in a human?

• Temporalis• Found laterally on the sides of the skull in a

human

Identify this muscle #22. (Can also be found from the lateral view)What is the function of this muscle?

Identify this muscle #22. What is the function of this muscle?

• Semitendinosus• Extends thigh, flexes hind-limb, abducts leg

Identify this muscle #23.How is the relative size of this muscle different in humans?

Identify this muscle #23.How is the relative size of this muscle different in humans?

• Sartorius• Thin in a human (this muscle does not cover

the entire ventral surface of the leg as in mink, but wraps laterally from the hip and moves medially towards the knee)

Identify this muscle #24.Identify this muscle #25.

Identify this muscle #24.Identify this muscle #25.

• #24 – adductor longus• #25 – adductor femoris

Identify this muscle #26.If you were to reflect this muscle in humans and

look at the deeper abdominal muscle, which abdominal muscle would you find moving laterally?

Identify this muscle #26.If you were to reflect this muscle in humans and

look at the deeper abdominal muscle, which abdominal muscle would you find moving laterally?

• External abdominal oblique• Transverse abdominus

Identify this muscle #27.

Identify this muscle #27.

• Triceps longhead brachii

Identify t his muscle #28.

Identify t his muscle #28.

• semitendinosus

Identify this muscle #29. (Extra Credit)

Identify this muscle #29. (Extra Credit)

• Rhomboideus cervicis

Identify this muscle #30.

Identify this muscle #30.

• semimembranosus

Identify this muscle #31.What is its function?

Identify this muscle #31.What is its function?

• Pectineus• Flexes hip and adducts thigh, femur, or leg

Identify this muscle #32.In humans, what related muscle lies directly

superior to this muscle?What common function do they both have?

Identify this muscle #32.In humans, what related muscle lies directly

superior to this muscle?What common function do they both have?• Gluteus maximus• Gluteus medius• Extends or abducts leg or femur

Identify this muscle #33.What is its function?

How many heads does this muscle group have?In humans, what is the opposing muscle?

Identify this muscle #33.What is its function?

How many heads does this muscle group have?In humans, what is the opposing muscle?

• Triceps brachii lateral head• Extends forearm, elbow• Three• Biceps brachii

Identify this muscle #34.What is its function?

Identify this muscle #34.What is its function?

• Spinodeltoid• Pulls humerus or abducts humerus

Identify this muscle #35.What is its function?

Close-up of #35

Identify this muscle #35.What is its function?

• Dorsoepitrochlearis• Extends forearm

Identify this muscle #36.What is its function?

Close-up of #36.

Identify this muscle #36.What is its function?

• Levator scapula(e)• Depresses scapula

Although not on your mink list, you studies this muscle in a human. Identify muscle #37.

Although not on your mink list, you studies this muscle in a human. Identify muscle #37.

• Rectus abdominus

Identify this deep, cartilaginous structure in the neck #38.What organ system is this part of?

Identify this deep, cartilaginous structure in the neck #38.What organ system is this part of?

• Trachea• Respiratory system

Identify this muscle #39.What is its function?

Based on its name, what is the bone of insertion?

Identify this muscle #39.What is its function?

Based on its name, what is the bone of insertion?

• Clavotrapezius• Pulls humerus forward or abducts the arm• Clavicle

Identify this number #40.What is its function?

Based on its name, what is the bone of insertion?

Identify this number #40.What is its function?

Based on its name, what is the bone of insertion?

• Caudofemoralis• Abducts and extends the leg• femur

Identify this muscle #41. (Extra Credit)

Identify this muscle #41. (Extra Credit)

• Rhomboideus capitis