Anatomy 7 - The Girdles

Question 1

What bones does the pectoral girdle consist of

Answer 1

The scapula and clavicle

Question 2

What is the joint between the pectoral girdle and the axial skeleton

Answer 2

The sternoclavicular joint

Question 3

What connects the scapula and the thoracic cage

Answer 3

Muscle

Question 4

What does the muscular connection between the thoracic cage and scapula allow

Answer 4

Great mobility of the shoulder girdle

Question 5

What type of bones does the pelvic girdle consist of

Answer 5

Two innominate bones

Question 6

Three elements that make up the pelvic bone

Answer 6

The ilium, ischium and pubis

Question 7

In children what are the elements of the pubic bone connected by

Answer 7

Cartilage

Question 8

At what age do the pubic elements fuse to form the pubic bone

Answer 8

16-18

Question 9

What does the pectoral girdle serve as

Answer 9

A muscle attachment site for muscles of the upper back, neck and chest

Question 10

The bones of the pelvic girdle are

Answer 10

Strongly united

Question 11

Since the bones of the pelvic girdle are strongly united this makes the structure

Answer 11

Largely immobile and good for weight bearing

Question 12

What does the pelvic girdle allow in relation to weight bearing

Answer 12

It allows for the weight of the torso to be passed into the lower limbs which improves stability

Question 13

Description of the scapula

Answer 13

It is flat and triangular which allows for soft muscle attachment

Question 14

Description of the clavicle

Answer 14

Serves as a rigid support from which the scapula and upper limb are suspended

Question 15

What is loaded between the superior and lateral borders of the scapula

Answer 15

The glenoid fossa

Question 16

What is the glenoid fossa

Answer 16

A shallow depression that articulates with the humerus bone of the arm to form the glenohumeral joint.

Question 17

What are the small bony bumps located immediately above and below the glenoid cavity

Answer 17

The supraglenoid tubercle and the infraglenoid tubercle

Question 18

What is the function of the supra and infraglenoid tubercles

Answer 18

Site of muscle attachment of the arm

Question 19

The cortacoid process is the attachment site for

Answer 19

Muscles of the anterior arm and chest

Question 20

Function of the ischium

Answer 20

Supports the body while sitting

Question 21

What acts as a sites of muscle attachment for muscles of the thighs

Answer 21

Anterior superior and inferior iliac spines

Question 22

What does the ilium articulate with

Answer 22

The sacrum

Question 23

What is the articulation between the ilium and sacrum called

Answer 23

Sacroiliac joint

Question 24

What serves as an attachment site of the posterior thigh muscles

Answer 24

Ischial tuberosity

Question 25

What stabilises the pectoral girdle

Answer 25

The rotator cuff muscles

Question 26

What muscles stabilise the pelvic girdle

Answer 26

The gluteus mediums and minimums, piriformis, quadratus femoris and obturator internus

Question 27

What innervated the pectoral girdle

Answer 27

The brachial plexus

Question 28

What innervates the muscles of the pelvic girdle

Answer 28

The lumbosacral girdle

Question 29

Differences in the infrapubic angle between males and females

Answer 29

It is less than 90 degrees in males and greater than 90 degrees in females

Question 30

Differences in the pelvic inlet in males and females

Answer 30

In males it is more heart-shaped, while in females it is more round or oval

Question 31

What is the difference in the males greater sciatic notch

Answer 31

It is narrower than females