Limbs (Hip and Gluteal Region)

Question 1

What is the action of Gluteus Maximus?

Answer 1

Hip Extension

Question 2

What is the action of Gluteus medius and minimus?

Answer 2

Hip abduction

Question 3

What is the attachment point of Gluteus medius and minimus?

Answer 3

Greater trochanter

Question 4

What is the attachment point of Gluteus Maximus?

Answer 4

posterior surface of the femur (gluteal tuberosity)

Question 5

What is the action of Piriformis?

Answer 5

External rotation of the hip

Question 6

What is the attachment point of Piriformis?

Answer 6

Greater Trochanter

Question 7

What is the action of Obturator Internus?

Answer 7

External rotation (abducts)

Question 8

What is the attachment point of Obturator internus?

Answer 8

Greater Trochanter

Question 9

How does Piriformis exit the pelvis?

Answer 9

via the greater sciatic notch

Question 10

What is the action of the Quadratus femoris?

Answer 10

External rotation of thigh

Question 11

What is the attachment point of Quadratus femoris?

Answer 11

FEMUR Do Not mix up with Lumborum

Question 12

Where does the Sacrotuberous ligament extend from?

Answer 12

Extends from the sacrum to the ischial tuberosity

Question 13

Review question: The actions of gluteus medius and minimus are most important during which phase of the gait cycle?

Answer 13

single-support/ mid-stance

Question 14

what bundle supplies neurovasculature to Gluteus medius and minimus?

Answer 14

Superior gluteal bundle

Question 15

What bundle supplies neurovasculature to Gluteus Maximus only?

Answer 15

Inferior Gluteal Bundle

Question 16

Damage to the inferior gluteal bundle would have what effect?

Answer 16

Patient would have difficulty extending the hip

Question 17

What is the epiphysis?

Answer 17

Expanded end of a long bone

Question 18

The diaphysis of an adult long bone primarily contains red bone marrow: T or F

Answer 18

FALSE
Correction: Yellow bone marrow

Question 19

What is the diaphysis

Answer 19

the shaft of a long bone

Question 20

Metaphysis

Answer 20

growth plate region (neck portion of long bone between the epiphysis and diaphysis)

Question 21

Medullary cavity

Answer 21

hollow space: contains yellow fatty bone marrow in adults

Question 21

Medullary cavity

Answer 21

hollow space: contains yellow fatty bone marrow in adults

Question 22

What does the Articular cartilage do?

Answer 22

Covers joint surface

Question 23

What does the Hyaline cartilage do?

Answer 23

Covers the articular surfaces of the bone

Question 24

What does the joint cavity contain?

Answer 24

Synovial fluid

Question 25

What is the synovial membrane?

Answer 25

Inner layer of the articular capsule

Question 26

What is the fibrous layer of a synovial joint?

Answer 26

Outer layer of the articular capsule

Question 27

What movements are possible at the hip joint?

Answer 27

Flexion, Extension, Abduction, Adduction and hip rotation

Question 28

What are the ligaments of the joint capsule?

Answer 28

1). Isochiofermoral 2). Iliofemoral 3). Pubofemoral

Question 29

What are the two sources of blood supply to the hip joint?

Answer 29

1). Femoral artery 2). Obturator artery

Question 30

All blood supply to the hip ultimately comes from external iliac artery: T or F

Answer 30

True

Question 31

Heel-strike

Answer 31

momentum produces forward motion Ex: running *Gluteus max and hamstrings prevent trunk from lurching forward*

Question 32

Stance leg during single-support

Answer 32

hip abductors hold trunk upright over stance leg *center of gravity is medial to the limb*; creates balance control *Gluteus medius and minimus hold trunk upright over stance leg*

Question 33

Toe-off

Answer 33

Plantarflexion produces forward motion *Post. leg muscles, tibial nerve *

Question 34

Swing leg

Answer 34

Dorsiflexion prevents toes from dragging on the ground *Ant. leg muscles, deep fibular nerve*

Question 35

What is the role of gluteus medius and minimus in walking?

Answer 35

Stabilizes the pelvis by preventing pelvic drop *during single-support stance the body tends to drop towards the unsupported side*