Medial Muscles of the thigh

Question 1

Sartorius m.
Heads?

Origin

Insertion

Action

Innervation

Answer 1

Cranial and caudal

Origin:
Cranial - crest of the ilium and thoracolumbar fascia
Caudal- iliac spine and border of the ilium

Insertion:
Cranial: the patella (like rectus femoris)

Caudal - the cranial border of the tibia (like gracilis)

Action: to flex hip joint (both)
cranial - extend stifle joint
caudal - flex stifle joint

innervation: femoral nerve

Question 2

Gracilis m.

Origin

Insertion

Action

Innervation

Answer 2

Origin: pelvic symphysis by the symphysial tendon

Insertion:
cranial border of the tibia (3 others)

Action
to adduct the limb, flex the stifle joint, and extend the hip and tarsal joints

Innervation
Obtrurator nerve

Question 3

What is the symphysial tendon?

Answer 3

thick flat tendon that the gracilis muscle arises from. the tendon attaches to the symphysis pelvis

Question 4

Who inserts on the cranial border of the tibia? (4)

Answer 4

biceps femoris
semitendinosous
tuber calcanei
gracilis

Question 5

femoral triangle

Answer 5

triangular space where the femoral vessels run to and from the pelvic limb

Question 6

Pectineus Muscle
Action
Innervation

Answer 6

Action: adduct limb
Innervation: Obtrurator nerve

Question 7

Adductor 
Origin
Insertion
Action 
Innervation

Answer 7

Origin:

• entire pelvic symphysis
• adjacent part of the ischiatic notch
• ventral part of the pubis and ischium?

Insertion:
lateral lip of the caudal rough surface of the femur

Action:
adduct the limb and extend the hip joint

Innervation:
Obturator nerve