Lab 10

Question 1

What are the three parts of the pelvic girdle?

Answer 1

1. Ilium
2. Ischium
3. Pubis

Question 2

What connects all three parts of the pelvic girdle?

Answer 2

The acetabulum.

Question 3

What are the five characteristics of the ilium?

Answer 3

1. Anterior superior iliac spine
2. Anterior inferior iliac spine
3. Posterior superior iliac spine
4. Posterior inferior iliac spine
5. Greater sciatic notch

Question 4

What are the three characteristics of the ischium and where are they?

Answer 4

1. Ischial spine
2. Ischial tuberosity
3. Lesser sciatic notch

Question 5

What are the three characteristics of the pubis?

Answer 5

1. Pubic symphysis
2. Pubic arch
3. Obturator foramen

Question 6

What are the nine features of the femur?

Answer 6

1. Head
2. Neck
3. Fovea
4. Greater trochanter (lateral)
5. Lesser trochanter (medial posterior)
6. Lateral and medial epicondyle
7. Lateral and medial condyle
8. Patellar surface
9. Intercondylar fossa

Question 7

Where does the patella connect?

Answer 7

The patella only connects to the femur.

Question 8

What are the four features of the tibia?

Answer 8

1. Lateral and medial condyles
2. Tibial tuberosity
3. Medial malleolus
4. Fibular notch (distal)

Question 9

What are the four features of the fibula?

Answer 9

1. Head (proximal)
2. Shaft
3. Lateral malleolus
4. Posterior border

Question 10

How many tarsals do you have and which bone articulates with the talus?

Answer 10

You have seven tarsals and the medial malleolus articulates with the talus.

Question 11

How many metatarsals do you have?

Answer 11

We have five metatarsals.

Question 12

How many phalanges do you have and what are the names of the regions?

Answer 12

We have fourteen phalanges and the regions are proximal, middle, and distal.

Question 13

What anterior muscle moves the thigh?

Answer 13

Iliopsoas

Psoas Major

Origin: Lumbar transverse processes (T12-L5)

Insertion: Lesser trochanter

Function: Lateral rotation and flex the thigh

Iliacus

Origin: Upper 2/3 of the iliac fossa

Insertion: Lesser trochanter

Function: Lateral rotation and flex the thigh

Question 14

What is the medial group of the thigh responsible for?

Answer 14

The medial thigh compartment adducts the thigh.

Origin: Pubic bone trunk

Insertion: Linea aspera (posterior portion of the femur)

Question 15

What posterior muscle moves the thigh?

Answer 15

Gluteus Maximus

Origin: Sacrum, iliac crest, and coccyx

Insertion: Gluteal tuberosity

(above the linea aspera posteriorly)

Function: Extension and lateral rotation of the thigh.

Question 16

Which anterior muscles move the leg?

Answer 16

Quadriceps femoris

Origin: Femur and hip bone

Insertion: Tibial tuberosity

Function: Extends the leg (kicking muscle)

Quadriceps femoris merges into the quadriceps tendon, inserting onto the patella, forming the patellar ligament and inserting onto the tibial tuberosity

Question 17

Which posterior muscles move the leg?

Answer 17

Hamstrings

(Biceps femoris, semimembranosus, semitendinous)

Origin: Ischial tuberosity

Insertion: Tibia and fibula

Function: Flexion of the leg and extension of the thigh.

Question 18

What anterior group of muscles moves the foot?

Answer 18

Tibialis Anterior

Origin: Lateral condyle of the tibia

Insertion: Medial portion of the foot

Function: Dorsiflexion and inversion of the foot (extension of the foot)

Question 19

What lateral group of muscles moves the foot?

Answer 19

Peroneus Longus

Origin: Fibular head and shaft

Insertion: Phalanges (first metatarsal) and travels underneath the foot

Function: Eversion and plantar flexor of the foot

Question 20

What posterior group of muscles moves the foot?

Answer 20

Gastrocnemius

Origin: Two heads that come from the femur condyles and knee capsule

Insertion: Calcaneus tendon (Achilles tendon)

Function: Plantar flexion (flexes leg)