Anatomy week 11

Question 1

What are the functions of the muscles of the Pectoral Girdle

Answer 1

• They attach the upper limb to the trunk
• Move and Stabilize the pectoral girdle during shoulder shoulder movement

Question 2

What are the anterior muscles of the pectoral girdle

Answer 2

-subclavius
-pectoralis minor
-serratus anterior.

Question 3

What are the posterior muscles of the pectoral girdle

Answer 3

• trapezius,
  -levator scapulae
  -rhomboid major,
  -rhomboid minor.

Question 4

Where do the posterior muscles of the of the Pectoral girdle originate fro and where do they insert?

Answer 4

Originate from cervical and thoracic vertebrae and insert on the scapula

Question 5

What are the Anterior mucles of the pectoral girdle anchored to

Answer 5

• Ribs and pectoral girdle boned

Question 6

What are the functions of the muscles of the shoulder region

Answer 6

-Muscles crossing the glenohumeral joint stabilize the humerus in the glenoid cavity and assist in arm movements

Question 7

Name the 3 major muscle groups of the shoulder region

Answer 7

• Trunk muscles
  -Scapulohumeral muscles
• Rotator Cuff muscles

Question 8

What do the trunk muscles include

Answer 8

• Pectoralis Major and Latissimus Dorsi

Question 9

What is the function of the Scapulohumeral muscles

Answer 9

• Attach humerus to scapula

Question 10

What is the function of the trunk muscles

Answer 10

• They connect the axial skeleton to the humerus

Question 11

What is the function of the individual muscles in the trunk muscles

Answer 11

Pectoralis Major: Strong flexor, adductor, and medial rotator of the arm.

Latissimus Dorsi: Strong extensor, adductor, and medial rotator of the arm.

Question 12

Name the muscles of the scapulohumeral muscles

Answer 12

Deltoid:
Teres Major:
Supraspinatus:
Infraspinatus & Teres Minor:
Subscapularis

Question 13

What does the Rotator cuff muscles include

Answer 13

supraspinatus, infraspinatus, teres minor, and subscapularis.

Question 14

What are the 2 functions of the rotator cuff muscles

Answer 14

-Stabilize the glenohumeral joint dynamically.

-Tendons form a supportive cuff

Question 15

What is the function of the muscles that are apart of the scapulohumeral muscles

Answer 15

-Deltoid: Abducts, flexes, and extends the arm.
-Teres Major: Adducts and internally rotates the arm.
-Supraspinatus: Initiates the first 15° of arm abduction and assists the deltoid.
-Infraspinatus & Teres Minor: Externally rotate the arm.
-Subscapularis: Internally rotates the arm.

Question 16

What is the general function about the muscles of the arm

Answer 16

Moves the shoulderand elbow joints

Question 17

What divides the arm into anterior and posterior compoartments

Answer 17

Brachial fascia

Question 18

Name the compartments in the arm

Answer 18

• Anterior
  -Posterior

Question 19

What does the Anterior compartment contain in the arm

Answer 19

• Musculocutaneous
  -Brachial artery vein

Question 19

What is the functions of the muscles in the anterior compartment of the arm

Answer 19

• Flex the glenohumeral and elbow joint

Question 19

Where does the Median and ulnar nerves descend along

Answer 19

• Descend along Medial side of the arm between the compartments

Question 19

What muscles does the Posterior compartment of the arm contain

Answer 19

• Radial nerve
  -Deep brachial artery and vein

Question 19

What is the function of the posterior compartment the arm

Answer 19

• Extend the glenohumeral and elbow joint

Question 20

What is the genereal function of the muscles of the forearm

Answer 20

• Move the joints of the elbow, wrist and hand

Question 21

Name the components of the forearm

Answer 21

Anterior and Posterior

Question 22

What is the function of the Anterior component of the forearm

Answer 22

- Flexion and pronation of the elbow, wrist and hand joint

Question 23

What does the Anterior compartment of the forearm contain

Answer 23

-Medial and Ulnar nerves - Ulnar and anterior interosseous arteries and veins

Question 24

What does the Posterior compartment of the forearm contain

Answer 24

- Radial nerve - Radial and posterior interosseous arteries and veins

Question 25

What is the function of the posterior compartment of the forearm

Answer 25

- Extension of the elbow rists and hand joints - Supination of the radioulnar joint

Question 26

What acts as the flexor of the elbow joint in the forearm

Answer 26

- Bracioaradialis

Question 27

Name the 6 different fascia in the hand

Answer 27

-Deep fascia -Pectoralis fascia -Clavi pectoral fascia -Axillary fascia -Brachial Fascia - Antebrachial fascia

Question 28

Name the compartments of the upper limb

Answer 28

* the anterior and posterior compartments of the arm * the anterior and posterior compartment s of the forearm * the thenar, hypothenar, central, adductor, and interosseous compartments of the palm of the hand.

Question 29

What is the function of the spaces between the muscles of the shoulder and scapula

Answer 29

They allow nerve and vessels to pass between the axilla, posterior scapula and the humeral regions

Question 30

Name all the spaces in the muscles and shoulder

Answer 30

The quadrangular space -The scapular notch -The triangular Space -The triceps hiatus

Question 31

What is the function of the quadrangular space

Answer 31

Transmits the posterior circumflex humeral artery and axillary nerve

Question 32

What is the quadrangular space bounded by

Answer 32

- long head of the triceps,humerus,teres major or teres minor ,muscles

Question 33

What does the scapular notch lie deep to

Answer 33

- Suprspinatus muscle

Question 34

What is the Triangualr space bounded by

Answer 34

Long head of the triceps, teres major and teres minor muscles

Question 35

What is the function of the Triangular space

Answer 35

- Transmits the circumflex scapular artery

Question 36

What is the function of the Triceps hiatus

Answer 36

- Transmits the radial nerve and deep brachial artery

Question 37

What is the function of the subclavian artery

Answer 37

-Supplies the neck,part of the thoracic wall and the upper limb

Question 38

Exlain where the right subclavian artery branches from

Answer 38

Branches of the brachiocephalic trunk from the aortic arch

Question 39

Where does the left subclavian artery arise from

Answer 39

- Aortic arch

Question 40

What is the name of the branches of the subclavian Artery

Answer 40

- Vertebral artery -Internal Thoracic Artery -Thyrocervical Artery

Question 41

Explain the function of the branches of the subclavian artery

Answer 41

-Vertebral Artery: Supplies parts of the brain. -Internal Thoracic Artery: Supplies the thoracic wall. -Thyrocervical Artery branches into 4 different arteries

Question 42

What is the pathway of the subclavian artery

Answer 42

Passes through the superior thoracic apperture and over the 1st rib

Question 43

Where does the Axillary Artery originate from

Answer 43

- Continues from the subclavian artery

Question 44

Name the three parts the Axillary Artery is divided into

Answer 44

Proximal Third Middle Third Distal Third

Question 44

What is the branches of the proximal third and function

Answer 44

Superior thoracic artery: Supplies 1st intercostal muscles.

Question 45

Name the branches that the Middle third has

Answer 45

Thoracoacromial artery Lateral thoracic artery

Question 46

Name the branches that the Distal third has

Answer 46

-Subscapular artery: - Anterior circumflex humeral artery: -Posterior circumflex humeral artery:

Question 47

What are the branches of the brachial artery

Answer 47

-Deep artery of the arm: -Radial artery -ulnar arteries:

Question 48

Where is superficial veins found and where do they drain into

Answer 48

Subcutaneous tissue Deep veins

Question 49

Name the 4 major veins

Answer 49

Cephalic Vein Basilic Vein Median Cubital Vein Median Antebrachial Vein

Question 50

Name the arteries of the wrists and hands(Networks and Arches)

Answer 50

-Palmar and Dorsal Carpal Networks -Superficial and Deep Palmar Arches

Question 51

What does the Princeps Pollicis Artery in the hand supply

Answer 51

Supplies the thumb

Question 52

What does the Radialis Indicis Palmar supply?

Answer 52

Supplies the index finger

Question 53

What does the Palmar and Dorsal Metacarpal/Digital Arteries supply?

Answer 53

Supplys hand and digits