13- Horse Thoracic Cavity

Question 1

Name the lobes and the structure of the blue arrows

Answer 1

Cranial lobe(right)
Caudal lobe (left)
Cardiac notch

Question 2

What is the structure outlines in yellow?

Answer 2

Hilus

Question 3

Number the intercostal spaces

Answer 3

3
4
5

Question 4

Label the diagram

Answer 4

1) Esophageal impression
2) Aortic impression
3) Cardiac impression

Question 5

Answer 5

Primary bronchi
Carina (located at the level of T4-T5)

Question 6

Label the lung structures

Answer 6

1) Primary bronchus
2) Secondary bronchus
3) Tertiary bronchus
4) Subsegmental bronchus
5) Bronchioles (then alveoli)

Question 7

Answer 7

Question 8

Identify the faces of the heart

Answer 8

Auricular face (left)
Atrial face (right)

Question 9

Answer 9

Question 10

Answer 10

Question 11

Answer 11

1) coronary sinus
2) Great cardiac vein

Question 12

Answer 12

1) coronary sinus
2) middle cardiac vein

Question 13

Where do you place the bell of your stethoscope to ascult the Pulmonary, Aortic, Mitral (left AV) and Tricuspid (right AV) valves?

Answer 13

Pulmonary- Left side, 3rd ICS
Aortic- left side, 4th ICS
Mitral- left side, 5th ICS
Tricuspid- right side, 4th ICS

Question 14

Label the branches of the equine aortic arch.

Answer 14

1) Left common carotid
2) Bicarotid trunk
3) Left subclavian a.
4) Brachiocephalic trunk
5) Right subclavian
6) Right common carotid

Question 15

Answer 15

1) costocervical trunk
2) Left subclavian artery

Question 16

Answer 16

1) vertebral a.
2) Left subclavian a.

Question 17

What structures does the deep cervical artery supply?

Answer 17

Courses toward the head to supply cervical structures and musculature in the caudal neck region

Question 18

Answer 18

Internal thoracic a.

Question 19

What structures does the superficial cervical artery supply?

Answer 19

Structures in the craniolateral shoulder region- pectoral, brachiocephalic

Question 20

Answer 20

1) Descending aorta
2) Dorsal intercostal

Question 21

The internal thoracic artery branches into the ventral intercostal arteries and cranial epigastric artery. What does each branch supply?

Answer 21

Ventral- supply ventral part of the thoracic wall
Cranial- supplies the ventral abdominal wall

Question 22

Label the nerves from the right view of the chest

Answer 22

Question 23

Label the nerves in the thoracic cavity of the horse

Answer 23