Thoracic Wall

Question 1

Where does the superior epigastric vein drain into?

Answer 1

Internal Thoracic Vein

Question 2

What area does the superior epigastric vein drain?

Answer 2

Anterior Abdominal Wall
Superior Rectus Abdominis Muscles

Question 3

What is the function of the Transversus Thoracis muscle?

Answer 3

Depress the ribs during forced expiration, to decrease the volume of the thoracic cavity.

Question 4

Where does the anterior intercostal arteries originate from?

Answer 4

Internal Thoracic Artery (R&L)

Question 5

What nerve innervates the Transversus Thoracis muscle?

Answer 5

Intercostal Nerves

Question 6

Where does the Internal Thoracic Vein drain into?

Answer 6

Brachiocephalic Vein

Question 7

What are the branches of the Internal Thoracic Vein?

Answer 7

Superior Epigastric Vein
Musculophrenic Vein

Question 8

Which artery does Anterior Intercostal Artery anastamose with?

Answer 8

Posterior Intercostal Artery

Question 9

Where does the Internal Thoracic Artery originate from?

Answer 9

Subclavian Artery

Question 10

What nerve innervates the Serratus Anterior muscle?

Answer 10

Long Thoracic Nerve (arises from roots C5-C7)

Question 11

What is the function of Serratus Anterior muscle?

Answer 11

Protraction and stabilization of the scapula.
Assisting upward rotation of the scapula.

Question 12

What area does the Internal Thoracic Artery supply?

Answer 12

Anterior Thoracic Wall
Breast Tissue

Question 13

What blood vessels supply Serratus Anterior Muscle?

Answer 13

Lateral Thoracic Artery (branch of the Axillary Artery)

Question 14

Where does the Pulmonary Trunk originate from?

Answer 14

Right Ventricle

Question 15

What is the origin of the Phrenic Nerve?

Answer 15

Ventral nerve roots C3-C5

Question 16

What is the sensory innervation of the Phrenic Nerve?

Answer 16

Fibrous Pericardium
Mediastinal Pleura
Diaphragmatic Peritoneum

Question 17

What area does the Pericardiacophrenic Vein drain?

Answer 17

Pericardium and Thoracic Diaphragm

Question 18

What is the motor innervation of the Phrenic Nerve?

Answer 18

Diaphragm

Question 19

What functional deficit would be observed if the Phrenic Nerve was lesioned?

Answer 19

Weakening or paralysis of the diaphragm muscle
Reduced ability to breathe

Question 20

Where does the Pericardiacophrenic Vein come from?

Answer 20

Pericardium and Thoracic Diaphragm

Question 21

Where does the Pericardiacophrenic Vein drain into?

Answer 21

Internal Thoracic Vein

Question 22

Where does the Musculophrenic Artery originate from?

Answer 22

Internal Thoracic Artery

Question 23

What area does the Superior Epigastric Artery supply?

Answer 23

Anterior Abdominal Wall
Upper Rectus Abdominis Muscles

Question 24

What area does the Musculophrenic Artery supply?

Answer 24

Intercostal Spaces/Muscles 7-9
Pericardium
Anterior Diaphragm
Upper Rectus Abdominis Muscle

Question 25

Where does the Superior Epigastric Artery originate from?

Answer 25

Internal Thoracic Artery

Question 26

What is the function of the Innermost Intercostal Muscle?

Answer 26

Depress ribs during forced expiration.
Decrease the volume of the thoracic cavity.

Question 27

Where does the Pericardiacophrenic Artery originate from?

Answer 27

Internal Thoracic Artery

Question 28

What area/structure does the pericardiacophrenic artery supply?

Answer 28

Pericardium
Thoracic Diaphragm

Question 29

Where does the Superior Vena Cava drain into?

Answer 29

Right Atrium

Question 30

What is the function of the External Intercostal Muscle?

Answer 30

Elevate the ribs during forced inspiration.
Increase the volume of the Thoracic Cavity

Question 31

Where does the Superior Vena Cava come from?

Answer 31

Right and Left Brachiocephalic Veins

Question 32

Where does the Internal Thoracic Vein come from?

Answer 32

Anterior Intercostal Veins
Superior Epigastric Vein
Musculophrenic Vein

Question 33

Which blood Vessel supplies the External Intercostal Muscle?

Answer 33

Intercostal Artery