Rabbit Muscles

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external oblique
internal oblique
tranversus abdominus
- compress abdominal region
- latter 2 are internal to external oblique
- all differ in muscle fiber direction
rectus abdominus
- pulls sternum and ribs caudally
- under external oblique
multifidi
spinalis
- narrow band of muscles on either side of vertebral column
- extend vertebral column
- multifidi - posterior
- spinalis - anterior
erector spinae
longissimus dorsi
- thick muscles lateral to multifidi and spinalis
- extend vertebral column
- erector spinae - posterior
- longissimus dorsi - anterior
iliocostalis
- lateral to longissimus dorsi
- attached to ribs, brings ribs together (good for breathing/locomotion)
serratus ventralis
- fan-shaped muscle under armpit
- helps pull scapula towards sternum
splenius
- alongside anterior end of longissimus dorsi
- elevates head (attaches to occipital bone)
scalenus
- dorsal to rectus abdominus (anterior portion)
- bends neck
gluteus medius

[ab/adducts thigh]
gluteus maximus/superficialis

abducts thigh
caudofemoralis

abducts thigh, extends shank
biceps femoris

abducts thigh, flexes shank
tensor fascia latae

helps extend shank
sartorius
- adducts thigh, extends shank
- internal
gracilis
- adducts and retracts leg
- internal
quadriceps complex:
vastus medius
vastus lateralis
rectus femoris
- deep inner thigh
- powerful shank extensors
semimembranous
- deep inner thigh
- extends thigh
adductor femoris brevis et magnus
- deep inner thigh
- adduct thigh
sternohyoid

retracts hyoid (bone at base of tongue)
geniohyoid

protracts hyoid
sternothyroid

retracts larynx (voice box)
thyrohyoid

protracts larynx
temporal
- skull roof and coronoid process of mandible
- moves mandible dorsally and caudally (close jaws)
masseter
- zygomatic arch and mandible
- moves mandible dorsally
- associated with lateral "chewing" motion seen in herbivores when two opposing parts cancel each other out
digastric
- near geniohyoid
- depressed mandible to open jaw
mylohyoid
- near geniohyoid
- raises hyoid, tongue and floor of oral cavity
What muscles are homologous to the cucullaris muscles in sharks?

trapezius complex (support and rotate scapula)

Author

tkschmidt

186179

Card Set

Rabbit Muscles

Description

Rabbit Lab Practical Terms

Updated

2012-12-05T04:10:18Z

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