Ventral body cavity

Question 1

What is the coelom

Answer 1

Body cavity
Found between alimentary system and body wall.
Lined with mesoderm derived muscles.

Question 2

Important of coelom

Answer 2

Provide organs with area for development
Protects organs
Allow independent muscle growth
Produces coelomic fluid.

Question 3

Importance of coelomic fluid

Answer 3

Important for movement in invertebrates
Supports organs
Medium for immune cells.

Question 4

What process organises coelom

Answer 4

Gastrulation

Question 5

Cleavage in protostomes

Answer 5

Spiral
Animal pole blastomeres rotate with respect for vegetal pole blastomeres.

Question 6

Cleavage in deuterostomes

Answer 6

Spiral
Animal pole blastomeres and vegetal pole blastomeres are symmetrically originated.

Question 7

3 cavities of coelom

Answer 7

Pericardial
Pleuroperitoneal
Peritoneal

Question 7

Folds of coelom

Answer 7

Pulmonary fold
Transverse fold

Question 8

Pericardial Cavity role

Answer 8

Mesoderm lined
Cavity surround heart

Question 9

Pleuroperitoneal cavity

Answer 9

Mesoderm lined
Cavity surrounds other ventral organs

Question 10

Peritoneal cavity

Answer 10

Mesoderm lines
Cavity surrounds abnormal and pelvic regions

Question 11

Role of transverse fold

Answer 11

Separate Pericardial and pleuroperitoneal cavities

Question 12

Role of pulmonary fold

Answer 12

Separate pleuroperitoneal and peritoneal cavities.
(diaphragm)

Question 13

What separates the organs from coelomic fluid

Answer 13

Peritoneum