Unit 2 Practice Questions

Question 1

The diaphragm has three openings to allow passage for what 3 structures? And at what level?

Answer 1

Inferior vena cava (T8), opening for esophagus (T10), and opening for aorta (T12).

Remember: I8 10Eggs At12

Question 2

The Azygos vein is found on the left side of thoracic cavity. True or False?

Answer 2

False.

Found on right side and connects with Accessory hemizygos vein and hemizygos veins found on left. Drains into superior vena cava

Question 3

Where does the phrenic nerve originate?

Answer 3

C3-C5, cervical plexus (ventral rami of cervical spinal nerves)

Question 4

What is the strip of muscle that demarcates the muscular part of the right atrium called?

Answer 4

Pectinate muscle

Question 5

What drains into the right atrium?

Answer 5

Coronary sinus, superior vena cava, inferior vena cava

Question 6

What artery feeds the structures of the left side of the heart?

Answer 6

Left coronary artery supplies blood to left heart structures

Question 7

The right lung has 3 lobes true or false?

Answer 7

True.

Superior, middle, inferior

Question 8

The esophagus arises from and enters into what?

Answer 8

Arises from pharynx and enters into cardia of stomach

Question 9

What is the thoracic duct?

Answer 9

Lymphatic duct that drains all lymphatic fluid below the diaphragm, left side of the thorax, left upper limb, left head/neck.

Found in posterior mediastinum between the esophagus and thoracic descending aorta

Question 10

What are the 3 structures branching off of the arch of the aorta?

Answer 10

Brachiocephalic trunk, subclavian artery, and left common carotid artery.

Note: descending thoracic aorta will continue off of arch of aorta.