bb ch 40, 41, 43 - quiz 2 Flashcards

1
Q

What is the main artery for the body?

A

Aorta

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2
Q

What does the aorta turn into?

A

Ascending aorta then arches posterior and left to create aortic arch

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3
Q

What are the branches of the aortic arch? Include subdivisions

A

Left common carotid a.
Left subclavian a.
Brachiocephalic trunk
-right common carotid a.
-right subclavian a.

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4
Q

What area do the subclavian arteries supply?

A

The upper limbs

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5
Q

What area do the common carotid arteries supply?

A

Head and neck

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6
Q

What happens to the aortic arch after it gives off branches?

A

It ends as the descending aorta in the thorax and abdomen

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7
Q

Where do the right and left subclavian arteries branch off of? Where do they course?

A

Right - Brachiocephalic trunk
Left - aortic arch

Through the throax/neck to upper limb

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8
Q

What are the branches of the subclavian artery?

A

Vertebral a.
Internal mammary (thoracic) a.
Thyrocervical a.
Costocervical a.

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9
Q

What does the subclavian artery turn into and specifically where?

A

The axillary a.

Lateral border of first rib

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10
Q

Where does the axillary a. start and then course?

A

Lateral border of first rib

Through axilla

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11
Q

How many parts is the axillary a. divided into and by what?

A

3
Pec minor

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12
Q

Answer the following about the FIRST part of the axillary a.

Where does the part begin and end?
How many branches? Name them.
What do they supply?

A

Between the lateral border of the first rib and superomedial border of pec minor
1 - highest (supreme) thoracic a.
First 2 intercostal spaces

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13
Q

Answer the following about the SECOND part of the axillary a.

Where does the part begin and end?
How many branches? Name them.
What do they supply?

A

Posterior to pec minor
2

thoracoacromial trunk - above pec minor, has four branches:
-pectoral / supplies pec major and minor
- clavicular / supplies subclavius and sternoclav. jt.
-acromial / acromion process
-deltoid / deltoid and pec major

lateral thoracic a. - along inferolateral border of pec minor to lateral thoracic wall with long thoracic nerve, supplies lateral thoracic wall, breast

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14
Q

Answer the following about the THIRD part of the axillary a.

Where does the part begin and end?
How many branches? Name them.
What do they supply?

A

Between inferolateral border of pec minor and inferior border of teres major

3

Subscapular artery - 2 branches:
-thoracodorsal a. / supplies lat. dorsi with thoracodorsal n.
-circumflex scapular artery / posterior thru triangle space of shoulder, around lateral border of scalp, into infraspinous fossa deep to infraspinatus muscle

Anterior circumflex a. - anterior around surgical neck of humerus, supplies adjacent muscles, and ends by anastomosing with posterior circumflex humeral a.

Posterior circumflex humeral a. - posterior thru quad space of shoulder with axillary n., posterior around humeral surgical neck deep to deltoid and supplies surrounding muscles

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15
Q

Be able to draw the brachial plexus. What are the subcategories from left to right?

A

Root
Trunk
Division
Cord
Branch of nerve

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16
Q

Where does the nerve of the brachial plexus originate, course, and supply?

DORSAL SCAPULAR N.

A

C5
Deep to levator scapula and deep surface of rhomboids
Supplies rhomboid major and minor

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17
Q

Where does the nerve of the brachial plexus originate, course, and supply?

LONG THORACIC N.

A

From C5-7
Posterior to axillary a. and on external surface of serratus anterior
Supplies serratus anterior

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18
Q

Where does the nerve of the brachial plexus originate, course, and supply?

NERVE TO SUBCLAVIUS

A

From upper trunk
Descends posteriorly to clavicle, ending at subclavius muscle
Supplies subclavius

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19
Q

Where does the nerve of the brachial plexus originate, course, and supply?

SUPRASCAPULAR N.

A

From upper trunk
Lateral and posterior thru suprascapular notch and into supraspinous fossa, SUPPLIES supraspinatus, around spine of scapula and into infraspinous fossa, SUPPLIES infraspinatus

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20
Q

Where does the nerve of the brachial plexus originate, course, and supply?

LATERAL PECTORAL N.

A

From lateral cord
Through fascia above pec minor into deep surface of pec major
Supplies pec major

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21
Q

Where does the nerve of the brachial plexus originate, course, and supply?

MEDIAL PECTORAL N.

A

From medial cord
Pierces pec minor and through deep surface of pec major
Supplies pec minor and major

22
Q

Where does the nerve of the brachial plexus originate, course, and supply?

MEDIAL BRACHIAL CUTANEOUS N.

A

From medial cord
Descend below mid arm, pierce fascia
Supplies skin on medial arm

23
Q

Where does the nerve of the brachial plexus originate, course, and supply?

MEDIAL ANTEBRACHIAL CUTANEOUS N.

A

From medial cord
Descends below mid arm, pierces fascia
Supplies skin on medial forearm

24
Q

Where does the nerve of the brachial plexus originate, course, and supply?

UPPER SUBSCAPULAR N.

A

From posterior cord
Goes into and supplies subscapularis

25
Q

Where does the nerve of the brachial plexus originate, course, and supply?

THORACODORSAL N.

A

From posterior cord
Goes inferior and posterior to deep surface of lat. dorsi
Supplies lat. dorsi

26
Q

Where does the nerve of the brachial plexus originate, course, and supply?

LOWER SUBSCAPULAR N.

A

From posterior cord
Over anterior surface of subscapularis and divides into two branches
One supplies subscapularis
One supplies teres major

27
Q

Where does the nerve of the brachial plexus originate, course, and supply?

AXILLARY N.

A

From posterior cord
Goes inferior through quad space of shoulder, media, to surgical neck of humerus
Supplies teres minor and deltoid

28
Q

What is the Musculocutaneous nerve a continuation of?

A

Lateral cord after lateral root to median nerve

29
Q

What is then ulnar nerve a continuation of?

A

Medial cord after medial root to median nerve

30
Q

What is radial nerve a continuation of?

A

Posterior cord after axillary nerve

31
Q

What branches of the brachial plexus is the median nerve made of?

A

Lateral and medial roots of median nerve

32
Q

Be able to draw a cross section of the arm. What are the compartments, and which muscles belong to each?

A

Anterior, medial, and posterior compartments

A: biceps, coracobrachialis, brachialis
P: triceps

33
Q

What is the origin of biceps brachii?

A

Short head: coracoid process of scapula
Long head: supraglenoid tubercle

34
Q

What is the insertion of biceps brachii?

A

Radial tuberosity
Bicipital aponeurosis (lacerfus fibrosis)

35
Q

What is the action of biceps brachii?

A

Flex forearm at elbow
Supinate forearm at radio ulnar joint

36
Q

What is the innervation of biceps brachii?

A

Musculocutaneous nerve

37
Q

What is the origin of coracobrachialis?

A

Coracoid process of scapula

38
Q

What is the insertion of coracobrachialis?

A

Medial border of humerus, middle third

39
Q

What is the action of coracobrachialis?

A

Flex arm at shoulder

40
Q

What is the innervation of coracobrachialis?

A

Musculocutaneous nerve

41
Q

What is the origin of brachialis?

A

Anterior distal humerus

42
Q

What is the insertion of brachialis?

A

Ulnar tuberosity
Coronoid process of ulna

43
Q

What is the action of brachialis?

A

Flex forearm at elbow

44
Q

What is the innervation of brachialis?

A

Musculocutaneous nerve

45
Q

What is the origin of triceps brachii?

A

Long head: infraglenoid tubercle
Lateral head: posterior humerus above radial nerve
Medial head: posterior humerus below radial nerve

46
Q

What is the insertion of triceps brachii?

A

Olecranon process of ulna

47
Q

What is the action of triceps brachii?

A

Extension of forearm at elbow

48
Q

What is the innervation of triceps brachii?

A

Radial nerve

49
Q

What muscles are antagonists in the arm?

A

Biceps and triceps

50
Q

Which two muscles of the arm serve to flex the forearm at elbow?

A

Brachialis and biceps

51
Q

Which muscles of the arm share an innervation of musclocutaneous nerve?

A

Biceps, coracobrachialis, brachialis

52
Q

Which two muscles of the arm both originate from the coracoid process of the scapula?

A

Coracobrachialis and short head biceps