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Comparative > Equine Head Myology (23) > Flashcards

Equine Head Myology (23) Flashcards

Dr. Pimentel

1
Q

Which facial muscle has 2 branches in the horse?

A

levator nasolabialis

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2
Q

What is the orientation of the levator nasolabialis m.? How do you find it?

A

laterodorsal in muscle of face

palpate infraorbital foramen

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3
Q

How does the levator of the superior lip m. course?

A

tendon of levator of superior lip

left and right meet in the middle

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4
Q

Where does the levator superior lip m. insert?

A

inserts in midline of superior lip

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5
Q

Where does the canine muscle of the horse insert?

A

inserts into lateral wall

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6
Q

Where does the zygomatic m. of the horse course?

A

goes to commissure of lips

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7
Q

How does the malar m. of the horse course?

A

comes from ventral surface of eyelid and comes down face

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8
Q

Label 1-7

A
  1. levator of the superior lip m.
  2. zygomatic m.
  3. levator nasolabialis m.
  4. cutaneous m. of the face
  5. canine m.
  6. depressor of the lower lip m.
  7. malar m.
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9
Q

Label 1-6

A
  1. malar m.
  2. zygomatic m.
  3. depressor of lower lip m.
  4. canine m.
  5. levator of superior lip m.
  6. levator nasolabialis m.
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10
Q

Label 1-2

A
  1. parotidauricularis m.
  2. cutaneous faciei m.
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11
Q

Which muscle controls horse ear movements?

A

auricular m.

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12
Q

What muscle is this?

A

auricular m.

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13
Q

What muscles help dilate the nostrils?

A

dilatator muscles of the nostri

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14
Q

What muscle is being used in this image?

A

levator of the superior lip m.

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15
Q

What are the muscles of mastication?

A

masseter m.
pterygoid mm.
temporal m.
digastricus m.

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16
Q

The masseter muscle in the horse is deep to what muscle?

A

cutaneous m.

17
Q

What is the insertion of the masseter m.?

A

ventral surface of zygomatic arch and rostrally into facial part of zygomatic crest

18
Q

Label 1-9

A
  1. temporalis m.
  2. occipitomandibularis m.
  3. digastricus m.
  4. thyroid gland
  5. mandibular salivary gland
  6. depressor of lower lip (depressor labii inferioris m.)
  7. buccinator m.
  8. levator nasolabialis m.
  9. masseter m.
19
Q

Which pterygoid m. (medial or lateral) is larger?

A

medial pterygoid m.

20
Q

What are the parts of the digastricus m.?

A

rostral
caudal
occipitomandibularis

21
Q

What muscle is this?

A

pterygoid mm. (medial & lateral)

22
Q

If the masseter m. on the left side contracts, the [medial/lateral] pterygoid m. on the [ipsilateral/contralateral] side aids

A

medial pterygoid m.

contralateral side (so, right medial pterygoid m.)

23
Q

If the masseter m. on the right side contracts, the [medial/lateral] pterygoid m. on the [ipsilateral/contralateral] side aids

A

medial pterygoid m.

contralateral side (so, left medial pterygoid m.)

24
Q

Which 2 muscles help form the jugular groove with the jugular vein?

A

sternocephalicus m.

sternohyoid (and omohyoid) mm.

25
Q

Which part of the rhomboideus m. is lacking in the horse?

A

cervical part

26
Q

The rhomboideus m. is underneath the _____

A

trapezius m.

27
Q

Which muscle helps hold up the head?

A

splenius m.

28
Q

The sternocephalicus m. has one insertion in the head. Where?

A

mandible

“sternomandibularis m.”

29
Q

What are the 4 muscles to create the jugular groove?

A

sternohyoid m.
omohyoid m.
brachiocephalicus m.
sternocephalicus m.

NOT omotransversarius m. - Pimentel misspoke

30
Q

What are the 5 parts to the longissimus m. in the horse?

A

atlas
head
neck
thorax
lumbar

31
Q

What are the two parts to the nuchal ligament?

A

funicular
laminar

32
Q

How does the funicular part of the nuchal ligament span?

A

from withers to occipital bone

33
Q

How does the laminar part of the nuchal ligament span?

A

from funicular part to spinous process of cervical vertebrae

34
Q

The vertebrae makes what kind of shape?

A

“S” shape

35
Q

What is the shape of the equine thyroid gland?

A

round to oval in shape

36
Q

What tracheal rings is the thyroid gland between?

A

2 and 3

37
Q

Describe the location of the parathyroid gland

A

embedded within the thyroid gland

bilateral

Comparative (37 decks)

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