Larnx + Breast Supply +Drainage

Question 1

What are the two MOTOR innervations for nerve supply of larynx

Answer 1

• all intrinsic muscles of larynx = recurrent laryngeal nerve - branches of CNX
• Cricothyroid= external laryngeal.. Branch of superior laryngeal vein..branch of CNX

Question 2

What are sensory innervations for nerve supply of larynx

Answer 2

1. Internal laryngeal nerve: branch of superior laryngeal nerve..branch of CNX (for superior part of larynx)
2. Recurent laryngeal nerve (for inferior part of the larynx)

Question 3

What are the two arterial blood supplies to larynx

Answer 3

1. Superior laryngeal artery: (a branch of superior thyroid which is a branch of external caratoid artery)
2. Inferior laryngeal artery- (a branch of inferior thyroid which is a branch of thyrocervical trunk which is a branch of subclavian artery)

Question 4

What is the venous drainage of the larynx

Answer 4

1. Superior laryngeal nein which drains into the superior thyroid vein which grains into internal jugular vein
2. Inferior layngeal vein which drains into inferior thyroid vein which drains into the left bronchoceephellic vein

Question 5

What is the lymphatic drainage of the larynx

Answer 5

1. Superior to vocal chords = superior deep cervical lymph nodes
2. Inferior to the vocal chords= inferior deep cervical lymph nodes

Question 6

What is the arterial blood supply of breast

Answer 6

Internal thoracic artery
Blanche’s of axillary artery
Branches of inter coastal arterjes

Question 7

What is the venous drainage or breast

Answer 7

Axillary vein
Inter thoracic veins

Question 8

What innervates the diaphragm

Answer 8

Phrenic nerve C3 C4 C5

Question 9

What are the arterial blood supplies of diaphragm

Answer 9

Internal thoracic, thoracic aorta and abdominal aorta

Question 10

What is the venous drainage of diaphram

Answer 10

Drain into bronchocephelic azygous system and abdominal veins

Question 11

What are the 3 holes in diaphragm starting from top

Answer 11

Canal hiatus
Oesophageous hiatus
Aortic hiatus

Question 12

What level of vertebrae is
Canal hiatus
Oesophagal hiatus
Arortic hiatus

Answer 12

T8
T10
T12

Question 13

What comes out of
1.caval hiatus
2.oesophageal hiatus
3. Aortic hiatus

Answer 13

1. Inferior vana cava
2. Oesophagus, vagus nerves
3. Descendint aorta, thoracic duct etc.

Question 14

What are the 4 abductors of vocal chords

Answer 14

Interior cricothyroid
Lateral cricothyroid

Oblique aretenoid
Transverse artenoid

Question 15

Where is most of lymphatic drainage
What about rest

Answer 15

Axillary lymph nodes
Abdominal lymph nodes

Question 16

What do the superior and inferior deep cervical lymph nodes drain

Answer 16

Upper resp tract

Question 17

What do the deep cervical lymph nodes drain into

Answer 17

Jugular lymphatic trunk

Question 18

Where does the thoracic duct start

Answer 18

L1/2