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Medicine Sem 1 > Anatomy week 11 > Flashcards

Anatomy week 11 Flashcards

1
Q

What are the functions of the muscles of the Pectoral Girdle

A
  • They attach the upper limb to the trunk
  • Move and Stabilize the pectoral girdle during shoulder shoulder movement
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2
Q

What are the anterior muscles of the pectoral girdle

A

-subclavius
-pectoralis minor
-serratus anterior.

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3
Q

What are the posterior muscles of the pectoral girdle

A
  • trapezius,
    -levator scapulae
    -rhomboid major,
    -rhomboid minor.
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4
Q

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

A

Originate from cervical and thoracic vertebrae and insert on the scapula

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5
Q

What are the Anterior mucles of the pectoral girdle anchored to

A
  • Ribs and pectoral girdle boned
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6
Q

What are the functions of the muscles of the shoulder region

A

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

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7
Q

Name the 3 major muscle groups of the shoulder region

A
  • Trunk muscles
    -Scapulohumeral muscles
  • Rotator Cuff muscles
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8
Q

What do the trunk muscles include

A
  • Pectoralis Major and Latissimus Dorsi
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9
Q

What is the function of the Scapulohumeral muscles

A
  • Attach humerus to scapula
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10
Q

What is the function of the trunk muscles

A
  • They connect the axial skeleton to the humerus
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11
Q

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

A

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

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

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12
Q

Name the muscles of the scapulohumeral muscles

A

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

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13
Q

What does the Rotator cuff muscles include

A

supraspinatus, infraspinatus, teres minor, and subscapularis.

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14
Q

What are the 2 functions of the rotator cuff muscles

A

-Stabilize the glenohumeral joint dynamically.

-Tendons form a supportive cuff

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15
Q

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

A

-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.

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16
Q

What is the general function about the muscles of the arm

A

Moves the shoulderand elbow joints

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17
Q

What divides the arm into anterior and posterior compoartments

A

Brachial fascia

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18
Q

Name the compartments in the arm

A
  • Anterior
    -Posterior
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19
Q

What does the Anterior compartment contain in the arm

A
  • Musculocutaneous
    -Brachial artery vein
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19
Q

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

A
  • Flex the glenohumeral and elbow joint
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19
Q

Where does the Median and ulnar nerves descend along

A
  • Descend along Medial side of the arm between the compartments
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19
Q

What muscles does the Posterior compartment of the arm contain

A
  • Radial nerve
    -Deep brachial artery and vein
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19
Q

What is the function of the posterior compartment the arm

A
  • Extend the glenohumeral and elbow joint
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20
Q

What is the genereal function of the muscles of the forearm

A
  • Move the joints of the elbow, wrist and hand
21
Q

Name the components of the forearm

A

Anterior and Posterior

22
Q

What is the function of the Anterior component of the forearm

A
  • Flexion and pronation of the elbow, wrist and hand joint
23
Q

What does the Anterior compartment of the forearm contain

A

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

24
Q

What does the Posterior compartment of the forearm contain

A
  • Radial nerve
  • Radial and posterior interosseous arteries and veins
25
Q

What is the function of the posterior compartment of the forearm

A
  • Extension of the elbow rists and hand joints
  • Supination of the radioulnar joint
26
Q

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

A
  • Bracioaradialis
27
Q

Name the 6 different fascia in the hand

A

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

28
Q

Name the compartments of the upper limb

A
  • 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.
29
Q

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

A

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

30
Q

Name all the spaces in the muscles and shoulder

A

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

31
Q

What is the function of the quadrangular space

A

Transmits the posterior circumflex humeral artery and axillary nerve

32
Q

What is the quadrangular space bounded by

A
  • long head of the triceps,humerus,teres major or teres minor ,muscles
33
Q

What does the scapular notch lie deep to

A
  • Suprspinatus muscle
34
Q

What is the Triangualr space bounded by

A

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

35
Q

What is the function of the Triangular space

A
  • Transmits the circumflex scapular artery
36
Q

What is the function of the Triceps hiatus

A
  • Transmits the radial nerve and deep brachial artery
37
Q

What is the function of the subclavian artery

A

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

38
Q

Exlain where the right subclavian artery branches from

A

Branches of the brachiocephalic trunk from the aortic arch

39
Q

Where does the left subclavian artery arise from

A
  • Aortic arch
40
Q

What is the name of the branches of the subclavian Artery

A
  • Vertebral artery
    -Internal Thoracic Artery
    -Thyrocervical Artery
41
Q

Explain the function of the branches of the subclavian artery

A

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

42
Q

What is the pathway of the subclavian artery

A

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

43
Q

Where does the Axillary Artery originate from

A
  • Continues from the subclavian artery
44
Q

Name the three parts the Axillary Artery is divided into

A

Proximal Third

Middle Third

Distal Third

44
Q

What is the branches of the proximal third and function

A

Superior thoracic artery: Supplies 1st intercostal muscles.

45
Q

Name the branches that the Middle third has

A

Thoracoacromial artery
Lateral thoracic artery

46
Q

Name the branches that the Distal third has

A

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

47
Q

What are the branches of the brachial artery

A

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

48
Q

Where is superficial veins found and where do they drain into

A

Subcutaneous tissue
Deep veins

49
Q

Name the 4 major veins

A

Cephalic Vein
Basilic Vein
Median Cubital Vein
Median Antebrachial Vein

50
Q

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

A

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

51
Q

What does the Princeps Pollicis Artery in the hand supply

A

Supplies the thumb

52
Q

What does the
Radialis Indicis
Palmar supply?

A

Supplies the index finger

53
Q

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

A

Supplys hand and digits

Medicine Sem 1 (33 decks)

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