Question

question 1 (1 point)
the dorsal cavity contains the __ and the __ cavity.

○ pleural, spinal
○ abdominal, pelvic
○ pelvic, thoracic
○ vertebral, cranial

question 2 (1 point)
what structure separates the thoracic cavity from the abdominal cavity?

○ abdominal cavity
○ diaphragm
○ mesentery
○ spine

Explanation:

Question 1

The dorsal cavity is divided into the cranial cavity (housing the brain) and the vertebral (spinal) cavity (housing the spinal cord). Pleural cavities are part of the thoracic cavity (ventral), abdominal - pelvic are ventral, and pelvic - thoracic is incorrect as thoracic is ventral. So the correct pair is vertebral and cranial.

The diaphragm is a muscle that separates the thoracic cavity (containing heart and lungs) from the abdominal cavity (containing digestive organs etc.). The abdominal cavity is not a separating structure, mesentery supports organs in the abdomen, and spine is part of the dorsal support. So the diaphragm is the correct structure.

Answer:

D. Vertebral, cranial

Question 2