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AN S 214 L > Lab 4 - Skeletal Muscles > Flashcards

Lab 4 - Skeletal Muscles Flashcards

1
Q

Muscles are comprised of what tissue?

A

Contractile tissue that assists in the movement of the body and organ

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2
Q

What are the 3 types of muscle?

A

Smooth
Cardiac
Skeletal

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3
Q

What is Smooth muscle?

A

Not striated
Involuntary
Found in GI, reproductive, ureters, and Blood vessels
Is circular and longitudinal
A single Nucleus that is centrally located

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4
Q

What is the Cardiac Muscle?

A

Is striated
Involuntary
ONLY found in the HEART
Cells connected by intercalated discs
1 or 2 nuclei

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5
Q

What is Skeletal Muscle?

A

Is Striated
Voluntary
Attached to bones
Longitudinal layers/ elongated cells
Multinucleated/ located to the side of cells

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6
Q

Smooth Muscle is involved in what 2 special types of contractions?

A

Peristalsis and Segmentation

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7
Q

What is Peristalsis?

A

movement of material

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8
Q

What is Segmentation?

A

Stationary rhythmic contraction and relaxation of intestinal smooth muscle
Result is mixing

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9
Q

What is the purpose of skeletal muscle?

A

Maintain posture
Movement

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10
Q

What are the skeletal muscle attachments?

A

The Origin and Insertion

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11
Q

What is the Origin?

A

The end of the muscle that is attached to a stationary part of bone

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12
Q

What is the Insertion?

A

The end of the muscle that is attached to a mobile section of bone

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13
Q

What is the Biceps femoris?

A

Located on the Lateral part of the hind leg

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14
Q

What is the Cutaneous trunci?

A

Located directly under the skin, horizontal striations, and is separated from the skin
(Thoracic and Abdominal Cavity)

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15
Q

What is the Gastrocnemius?

A

Located in the middle of the hind leg and contracts when you move the leg

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16
Q

What is the Gluteus Group?

A

Located anterior of the tail and is dark pink in color

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17
Q

What is the Gracilis?

A

Located on the medial part of the hind leg and is a thin sheet

18
Q

What is the Infraspinatus?

A

Located below the scapula ridge

19
Q

What is the Latissimus dorsi?

A

Located caudally of the shoulder and the striations fan out caudal/dorsal

20
Q

What is the Longissimus dorsi?

A

Runs along the exterior of the spine

21
Q

What is the Obliquus externus abdominis?

A

Located lateral of the rectus abdominis and striations run diagonally cranial/dorsal

22
Q

What is the Pextoralis profundi?

A

Wraps around the medial part of front legs

23
Q

What is the Quadriceps femoris?

A

Located near stifle on cranial part of the hind leg

24
Q

What is the Semimembranosus?

A

Located on the inner leg, lateral to Gracilis

25
Q

What is the Rectus abdominis?

A

Located on the stomach region (Abs)

26
Q

What is the Semitendinosus?

A

Located on caudal part of hind leg, below the tail, and is tendon like

27
Q

What is the Serratus ventralis?

A

Medial, beneath the latissimus dorsi, large white like make it look like knuckles

28
Q

What is the Supraspinatus?

A

Located in front of scapula ridge

29
Q

What is the Trapezius?

A

Located dorsal of the shoulder and looks like a large dark triangle

30
Q

What is the triceps group?

A

Located on caudal part of front leg
- Subscapularis
- Psoas major
- Cutaneous trunci

31
Q

What is the Subcapularis?

A

Located on back of scapula

32
Q

What is the Psoas major?

A

Begins at medial surface caudal to the last rib and ventral to the vertebrae

33
Q

What is the Cutaneous trunci?

A

muscle layer that lines the skin
seen after skinning the animal
responsible for skin twitching reflexes

34
Q

infra-

A

below

35
Q

supra-

A

above

36
Q

inter-

A

between

37
Q

-lemma

A

sheath or husk

38
Q

mega-, megalo-

A

large

39
Q

myo-

A

muscle

40
Q

semi-

A

half

AN S 214 L (6 decks)

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