Thoracic Limb: Vessels and Nerves

where does the Left Subclavian a. arise from

Arises from Aorta

where does the Right Subclavian a. arise from

Arises from Brachiocephalic trunk (off of aorta)

what does the Superficial Cervical supply

Supplies superficial muscles at base of neck, superficial cervical lnn. and muscles of the scapula and shoulder

where does the Axillary a. arise from

Arises from Subclavian (after passing lateral to the first rib)

what does the External Thoracic a. supply

Supplies superficial pectoral m.

what does the Lateral thoracic a. supply

Supplies deep pectoral, latissimus dorsi, cutaneous trunci, skin, and mammae in females

what does the Subscapular a. supply

Supplies scapula, shoulder muscles, long head of triceps, rhomboideus, trapezius

what does the Thoracodorsal a. supply

Supplies latissimus dorsi, teres major, skin

what does the Caudal circumflex humeral a. supply

Supplies triceps brachii, deltoideous, coraco-brachialis, infraspinatus, shoulder jt.

what does the Cranial circumflex humeral supply

Supplies biceps brachii, shoulder jt.

what does the Deep brachial a. supply

Supplies triceps brachii

what does the Bicipital a. supply

Supplies biceps brachii

what does the Collateral ulnar a. supply

Supplies triceps brachii, ulnar n., elbow

Where does the Superficial brachial a. give rise to

Gives rise to cranial superficial antebrachial a.

what does the Transverse cubital a. supply

Supplies to elbow and adjacent mm.

What does Common interosseous a. supply

supplies Branches into ulnar a., cranial & caudal interosseous a.

Principle supply of the manus

Median a.

where does the Radial a. arise from

Arises from Median artery

Where does the Deep antebrachial a. arise from

Arises from Median artery

What does the Dorsal common digital a. supply

supplies the manus

What does the Palmar common digital a. supply

supplies the manus

Subscapular n. has what kind of innervation to which muscles

Motor innervation to subscapularis m.

Musculocutaneous n. has what kind of innervation to which muscles

Both motor and sensory innervation. Motor to biceps brachii m., brachialis m., and coracobrachialis m. Sensory to medial aspect of antebrachium

Axillary n. has what kind of innervation to which muscles

Both motor and sensory innervation. Motor to teres major m., teres minor m., deltoideus m. Sensory to craniolateral shoulder area, cranial aspect of antebrachium

Radial n. has what kind of innervation to which muscles

Motor: triceps brachii m., tensor fasciae antebrachii m., anconeus m., brachioradialis m., extensor carpi radialis m., common digital extensor m., lateral digital extensor m., extensor carpi ulnaris m., supinator m., abductor pollicis longus m.

Median n. has what kind of innervation to which muscles

Motor: pronator teres m., flexor carpi radialis m., superficial digital flexor m., pronator quadrates m. Sensory: palmar aspect of manus

Ulnar n. has what kind of innervation to which muscles

Both motor and sensory innervation. Motor to pronator teres m., flexor carpi radialis m., superficial digital flexor m., pronator quadrates m. Sensory to palmar aspect of manus

What does the brachial a. supply

supplies the Main arterial trunk in brachial region

What arteries all supply to the manus

dorsal common digital a. , dorsal metacarpal a. , palmar common digital a. , palmar metacarpal a.

What arteries arise from the brachial artery

deep brachial a., bicipital a., collateral ulnar a., superficial brachial a., transverse cubital a., common interosseous a., cranial & caudal interosseous a., median a.

What does the deep brachial a. supply

triceps brachii

What does the transverse cubital a. supply

to elbow and adjacent mm.

What Forms superficial palmar arch with a branch of the caudal interosseous a.

Median a.

what does the axillary v. arise from

subclavian v

what does the brachial v. arise from

axillary v.

what does the median v. arise from

brachial v.

what does the cephalic v. arise from

external jugular v

what does the axillobrachial v. arise from

axillary v.

what does the omobrachial v. arise from

external jugular v.

what does the accessory cephalic v. arise from

cephalic v.

what does the median cubital v connect

brachial/ median v. with cephalic v

spinal nerves of suprascapular n.

C6, C7

spinal nerves of subscapular n.

C6, C7

spinal nerves of musculocutaneous n.

C6, C7, C8

spinal nerves of Axillary n.

C7, C8

spinal nerves of radial n.

C7, C8, T1, T2

spinal nerves of superficial branch of radial n.

C7, C8, T1, T2

spinal nerves of deep branch of radial n.

C7, C8, T1, T2

spinal nerves of Median n.

C8, T1, T2

spinal nerves of Ulnar n.

C8, T1, T2

Suprascapular n. has what kind of innervation to which muscles

Motor of supraspinatus m. and infraspinatus m.

Superficial branch of radial n. has what kind of innervation to which muscles

Sensory to cranial and lateral aspect of antebrachium and medial and dorsal aspect of manus

deep branch of radial n. has what kind of innervation to which muscles

Motor to Extensors mm. and supinator m. of the antebrachium

Where does the Median N. Originate from

common trunk with ulnar nerve in proximal medial region of brachium

When working through your dissection you accidentally cut the label artery

• name this artery

• What tissue/ region will not be supplied

• Brachial a.

• main arterial trunk in brachial region

When performing a dissection you accidentally cut the labeled vein

• what is this vein

• where does this vein arise from

Cephalic vein

external jugular vein

When performing a dissection you accidentally cut the labeled vein

• what is this vein

• What vein might we see bleed due to this cut

accessory cephalic vein

cephalic vein

When performing a dissection you accidentally cut the labeled nerve/nerves

• what is this nerve/nerves

• What spinal nerves do these originate from

• name 3 muscles that are now paralyzed

• are these sensory, motor, or both?

• median and ulnar nerve

• C8, T1, and T2

• pronator teres m., flexor carpi radialis m., supereficial digital flexor m., prontaor quadrates m., palmar aspect of manus, flexor carpi ulnaris m., deep digital flexor m., interossei m., caudal aspect of antebrachium, lateral side of 5th digit

• both

When performing a dissection you accidentally cut the labeled vein

• what is this vein

• What vein might we see bleed due to this cut

Median v.

brachial v.

If a dog is not able to flex the carpus and digits which nerves could be affected?

ulnar and median n

T/F if a dog has an injury in the superficial branch of the radial nerve, the extension of the carpus will be lost

false

A dog has aan injury in its metacarpal pad, which main veins drains the area

cephalic v.

Name the structure located cranial to the cubital joint and labeled by the big yellow arrow

median cubital vein

What is this vein in a dissection of a dog’s abdomen? be specific

left testicular v

which sublumbar muscle is indicated with the yellow arrow?

Psoas minor