the vertebrate body plan

Question 1

tube within a tube body plan

Answer 1

inner tube (respiratory & digestive organs), outer tube- the outer tube body wall (axial skeleton, muscles, and nervous structures)

Question 2

bilateral symmetry

Answer 2

the left half of the body mirrors its right half

Question 3

dorsal hollow nerve cord

Answer 3

a feature of vertebrate embryos that develops into the brain and spinal cord

Question 4

notochord and vertebrae

Answer 4

a stiff rod replaced by the vertebrae during development; remnants become disks between vertebrae (becomes backbone)

Question 5

segmentation

Answer 5

repeating units of similar structure that run from the head along the full length of the trunk (ex: ribs)

Question 6

pharyngeal arches

Answer 6

pouches that give rise to important structures in the head and neck regions, very defined

Question 7

body cavities

Answer 7

protected areas inside the body that contain and support a variety of internal organs

Question 8

dorsal body cavity

Answer 8

cranial cavity (located inside skull) and vertebral cavity (spinal column), located posteriorly

Question 9

ventral body cavity

Answer 9

thoracic cavity & abdominopelvic cavity

Question 10

thoracic cavity

Answer 10

pleural cavity, mediastinum, pericardial cavity

Question 11

pleural cavity

Answer 11

lungs

Question 12

mediastinum

Answer 12

heart and other thoracic organs (trachea and esophagus)

Question 13

pericardial cavity

Answer 13

heart and roots of the great vessels

Question 14

abdominopelvic cavity

Answer 14

abdominal cavity, pelvic cavity

Question 15

abdominal cavity

Answer 15

digestive viscera

Question 16

pelvic cavity

Answer 16

organs of the urinary and reproductive systems