Terms Lab 11

Question 1

What are the three lung lobes shared by both sides?

Answer 1

Cranial, middle, and caudal

Question 2

Which side of the lungs is the accessory lobe located? (214)

Answer 2

Right

Question 3

What are the principle bronchi? (246)

Answer 3

First branch from the trachea

Question 4

What are lobar bronchi? (246)

Answer 4

Second branch from the trachea; supplies each lobe of the lungs

Question 5

Where are the tracheobronchial lymph nodes located? (246)

Answer 5

At the bifurcation of the trachea and further out on the bronchi

Question 6

Where does the cranial vena cava enter the heart? (232)

Answer 6

Right atrium

Question 7

What is the brachiocephalic vein? (230, 243)

Answer 7

First branch off the cranial vena cava; union of external jugular and subclavian veins

Question 8

What is the first branch off the cranial vena cava? (230, 243)

Answer 8

Brachiocephalic vein

Question 9

What is the second branch off the cranial vena cava? (230)

Answer 9

External jugular vein

Question 10

What is the subclavian vein? (129)

Answer 10

Second branch off the cranial vena cava

Question 11

What is special about the azygos vein? (230)

Answer 11

It only develops on the right side!

Question 12

What is typically the last branch to enter the cranial vena cava? (230)

Answer 12

Azygos vein

Question 13

Where is the azygos vein located? (230)

Answer 13

Runs along the ventrolateral side of the vertebrae

Question 14

Where does the thoracic lymph duct terminate? (229)

Answer 14

Enters the left brachiocephalic vein

Question 15

Where does the aorta leave the heart? (233)

Answer 15

Emerges from the left ventricle

Question 16

Where is the aortic arch located? (229)

Answer 16

Inside the pericardium

Question 17

Where is the descending aorta located? (229)

Answer 17

Just ventral to the vertebrae

Question 18

What is the first branch from the aorta? (229)

Answer 18

Brachiocephalic trunk

Question 19

Where is the brachiocephalic trunk located? (229)

Answer 19

First branch off the aorta and then passes obliquely across the ventral surface of the trachea

Question 20

What are the R&L common carotid arteries? (129)

Answer 20

Continuation of the brachiocephalic trunk (right side only); pg. 109 in dissection book

Question 21

What two arteries are the termination of the brachiocephalic trunk? (229)

Answer 21

Right common carotid and subclavian arteries

Question 22

What is the right subclavian artery? (228)

Answer 22

Termination of the brachiocephalic trunk; has four branches

Question 23

What are the four branches of the L or R subclavian artery? (228)

Answer 23

(1) vertebral artery, (2) costocervical trunk, (3) internal thoracic artery, (4) superficial cervical artery

Question 24

Where are the subclavian arteries located? (228)

Answer 24

L-side is 2nd branch from aorta, R-side is continuation of brachiocephalic trunk; travel on both sides of the trachea/esophagus

Question 25

What is the first branch from the subclavain artery? (227)

Answer 25

Vertebral artery

Question 26

Where is the vertebral artery located? (227)

Answer 26

Crosses the medial surface of the first rib and disappears dorsally between epaxial muscles; runs toward the head; 1st branch from the subclavian artery

Question 27

What is the second branch from the subclavian artery? (228)

Answer 27

Costocervical trunk

Question 28

Where is the costocervical trunk located? (228)

Answer 28

Extends dorsally along the first rib; 2nd branch of the subclavian artery

Question 29

What does the costocervical trunk supply? (228)

Answer 29

Dorsal intercostal arteries 1 - 3 or 4

Question 30

What is the fourth branch from the subclavian artery? (227)

Answer 30

Superficial cervical artery

Question 31

Where is the superficial cervical artery located? (227)

Answer 31

Arises medial to the first rib; travels to base of head and scapula; 4th branch of the subclavian artery

Question 32

What is the third branch from the subclavian artery? (227)

Answer 32

Internal thoracic artery

Question 33

Where is the internal thoracic artery located? (214, 227)

Answer 33

Travels along the sternum; 3rd branch from the subclavain artery

Question 34

What are the dorsal intercostal arteries? (273)

Answer 34

Branches from the aorta directly; numbers 4 or 5-10

Question 35

What is the bronchoesophageal artery? (231)

Answer 35

Branch from the right 5th intercostal artery

Question 36

Where is the bronchoesophageal artery located? (231)

Answer 36

Crosses left face of the esophagus; branch from the right 5th intercostal artery

Question 37

What is the phrenic nerve? (230)

Answer 37

Supplies the diaphragm; originates from the ventral branches of the C5, C6, C7; travels along the right side of the heart

Question 38

Where is the phrenic nerve located? (230)

Answer 38

Travels through mediastinum along the right atrium to the diaphragm