Equine Thorax Lab

Question 1

Where is the heart located?

Answer 1

Between ribs 3-6

Question 2

What important structures are in region of the withers?

Answer 2

Supraspinous bursa

Dorsoscapular ligament

Question 3

Give border of auscultation triangle

Answer 3

Dorsal=epaxial muscles
Cranial= line connecting caudal border of scapula and point of elbow
Caudoventral= basal border of the lung (6-11-16)

Question 4

What is the actual point of the elbow?

Answer 4

Olecranon tuber

Question 5

What acts as a shock absorber in the withers region?

Answer 5

Dorsoscapular ligament

Question 6

Other name for spur v

Answer 6

Superficial thoracic v

Question 7

Phrenic n has what type of fibers

Answer 7

Somatic motor

Question 8

Describe left recurrent laryngeal orientation and clinical importance

Answer 8

Comes off of left vagus and loops around aortic arch.

Damage may lead to roaring

Question 9

Describe right recurrent laryngeal orientation

Answer 9

Leaves vagus around branch of right subclavian close to the first rib

Question 10

Parasympathetic n

Answer 10

3,7,9,10

Question 11

If needle is inserted caudoventrally to pleura line of reflection what would happen

Answer 11

Enter peritoneal cavity

Question 12

What could cause roaring?

Answer 12

Damage to left recurrent laryngeal n

OR

Inflammation of tracheobronchial LN