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Frog Anatomy > Ventral Muscles > Flashcards

Ventral Muscles Flashcards

1
Q

2 Ventral Muscles in the frog head

(M, S)

A

Mylohyoid
Submentalis

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2
Q

large transverse muscle on the ventral surface of the mouth floor

(M)

A

Mylohyoid

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3
Q

mid-ventral connective tissue partition which divides the mylohyoid into left and right portions

(MR)

A

median raphe

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4
Q

Mylohyoid Origin & Insertion

(CSM, MR)

A

Origin: central surface of the mandible

Insertion: median raphe

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5
Q

Action of mylohyoid:

Elevates floor of mouth during _____ & _______

(B, R)

A

Breathing
Swallowing

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6
Q

narrow muscle found in front of mylohyoid

(S)

A

submentalis

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7
Q

Submentalis

Origin: (AELJ)
Insertion: (AAM)

A

Origin: Anterior edge of lower jaw

Insertion: Anterior angle of mandible

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8
Q

Action of Submentalis

Elevates ____
Constricts ______

(MT, EN)

A

Elevates Mandible tip
Constricts external nares

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9
Q

7 Muscles in the Upper Extremities (Ventral)

(AP, MP, PP, CP, SR, SH/D, TB)

A

Anterior Pectoralis
Middle Pectoralis
Posterior Pectoralis
Cutaneous Pectoralis
Sternoradialis
Scapulohumeralis (deltoid)
Triceps brachii

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10
Q

Muscle which lies immediately posterior to sternoradialis and most anterior of the chest muscle

(AP)

A

Anterior pectoralis

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11
Q

Anterior pectoralis lies

posterior to: (S)
anterior of: (CM)

A

-posterior to sternoradialis
-anterior of chest muscle

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12
Q

To expose anterior pectoralis, turn left half of the _____

(CP)

A

cutaneous pectoralis

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13
Q

Anterior pectoralis:

Origin: (E)
Insertion: (DR)

A

Origin: Epicoracoidea
Insertion: Deltoid Ridge

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14
Q

Action of Anterior pectoralis:

Acts as _____ and _____ of arm.

(A, R)

A

-Adductor
-Rotator

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15
Q

Muscle posterior to anterior pectoralis

(MP)

A

Middle Pectoralis

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16
Q

Middle Pectoralis is posterior to

(AP)

A

Anterior pectoralis

17
Q

Middle Pectoralis:

Origin: (MS, XS)
Insertion: (VP of PE of H)

A

Middle Pectoralis:

Origin: Mesosternum, Xiphisternum
Insertion: Ventral Portion of Proximal End of Humerus

18
Q

Action of Middle pectoralis:

______ and ______ arm.

(A, R)
(similar with anterior pectoralis)

A

-adducts
-rotates

19
Q

Muscle lateral to middle pectoralis

(PP)

A

Posterior pectoralis

20
Q

Posterior pectoralis extends to almost the entire portion of the median surface of ______

(T)

A

Trunk

21
Q

Posterior pectoralis

Insertion: (DR)

A

Deltoid Ridge

22
Q

Dermal muscle prominent in toads, lies posterior to sternoradialis

(CP)

A

Cutaneous Pectoralis

22
Q

Sternoradialis

Origin: (E, O)
Insertion: (PE of R)

A

Sternoradialis

Origin: Episternum, Omosternum
Insertion: Proximal End of Radius

22
Q

Action of Anterior pectoralis:

Acts as _____ and _____ of arm.

(A, R)
(similar with anterior and middle pectoralis)

A

-Adductor
-Rotator

22
Q

Cutaneous Pectoralis

Origin: (PP, AT of RA)
Insertion: (S of PR)

A

Cutaneous Pectoralis

Origin: Posterior Pectoralis, Anterior Third of Rectus Abdominis

Insertion: Skin of Pectoral Region

22
Q

Action of Scapulohumeralis (Deltoid)

Adductor and Protractor of _______

(FA)

A

Forearm

22
Q

Action of Cutaneous Pectoralis:

Draws the _______ _________

(SC)

A

Skin Caudad

23
Q

Median pair of thick muscle partly covered by posterior border of mylohyoid

(SR)

A

Sternoradialis

23
Q

What partly covers sternoradialis

(PB of M)

A

Posterior Border of Mylohyoid

23
Q

Action of Sternoradiali

A

Forearm flexor

23
Q

Muscle which passes obliquely ventral to lateral part of sternoradialis

A

Scapulohumeralis or Deltoid

23
Q

Scapulohumeralis (Deltoid)

Origin: S
Insertion: DR

A

Scapulohumeralis (Deltoid)

Origin: Scapula
Insertion: Deltoid Ridge

23
Q

Triceps Brachii

Origin: (SB, HS)
Insertion: (PE of R-U)

A

Triceps Brachii

Origin: Scapula Base
Insertion: Posterior End of Radio Ulna

23
Q

Broad muscle on postero-lateral portion of upper arm, may be seen dorsally and ventrally, exterior of forearm

(TB)

A

Triceps Brachii

Frog Anatomy (3 decks)

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