1.) Which of the following is clasically identified as a mesentery? A.) Visceral

Question

1.) Which of the following is clasically identified as a mesentery?

A.) Visceral Pericardium

B.) Parietal Pleura

C.) Visceral Pleura

2.) Which of the following statements has the least to do with the innervation of the thoracoabdominal diaphragm?

A.) Phrenic nerve

B.) Cervical spinal cord segments 3, 4, and 5

C.) C 3, 4, 5 keep the diaphragm alive

D.) Motor control ventillation

E.) Sensory innervation of superior and inferior surfaces

F.) Phrenic nerves grow longer as septum transversums completes development

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Explanation / Answer

Question 1:

Is the first option Visceral Peritoneum and not pericardium? Because mesentery is double layer of visceral peritoneum

Question 2:

The thoracoabdominal diaphragm is innervated by the Phrenic nerve. So option A is relevant

Phrenic nerve arises from Cervical spinal cord segments 3, 4, and 5. So option B is also relevant

The statement "C 3, 4, 5 keep the diaphragm alive" is also relevant as they provide the innervation. So option C is also relevant.

Motor control ventilation is the process by which breathing is regulated and innervation of the thoracoabdominal diaphragm is very important as diaphragm regulate breathing. So option D is also relevant.

Phrenic nerves grow longer as septum transversums complete development is true with respect to the development of diaphragm and this growth of phrenic nerves is crucial for innervation. So option F is also relevant

Hence Option E. Sensory innervation of superior and inferior surfaces has least to do with innervation of the thoracoabdominal diaphragm.

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