1.5e body cavities and membranes

Question 1

internal organs are housed within what?

Answer 1

enclosed spaces or cavities

Question 2

body cavities are named according to what?

Answer 2

surrounding structures

Question 3

what are body cavities grouped into?

Answer 3

posterior aspect and ventral cavity

Question 4

posterior aspect

Answer 4

• completely encased in bone

* physically/developmentally distinct from ventral cavities

Question 5

what is the posterior aspect subdivided into?

Answer 5

cranial cavity (endocranium)

which is formed by bones of cranium

-houses the brain

vertebral canal

formed by bones of vertebral column

-houses spinal cord

Question 6

is the ventral cavity larger than posterior cavity? where is the ventral cavity placed?

Answer 6

the ventral cavity is larger than posterior cavity and it is placed anteriorly in the body

Question 7

does the ventral cavity completely encase organs in bone?

Answer 7

no, the ventral cavity doesn’t completely encase organs in bone

Question 8

what is the ventral cavity partitioned into?

Answer 8

• superior thoracic cavity

* inferior abdominopelvic cavity

Question 9

the abdominopelvic cavity contains what?

Answer 9

abdominal cavity

pelvic cavity

Question 10

what are the 3 things found in the thoracic cavity?

Answer 10

pleural cavity
pericardial cavity
mediastinum

Question 11

what is the mediastinum and what does it contain?

Answer 11

the space in the thoracic cavity between the lungs or median space in thoracic cavity

contains heart, thymus, esophagus, trachea, and major blood vessels that connect to the heart

Question 12

what does the thoracic diaphragm separate? what is the function of the thoracic diaphragm?

Answer 12

the abdominopelvic cavity and performs an important function in breathing

Question 13

in the thoracic cavity, pleural cavities does what..

Answer 13

each houses a lung

Question 14

what are the 2 spaces and structures within the abdominopelvic cavity? what do they contain?

Answer 14

abdominal cavity
(superior area)
*contains most of digestive system organs, kidneys, and most of ureters

pelvic cavity
(inferior area)
*contains distal part of large intestine, remainder of ureters and urinary bladder, & internal reproductive organs

Question 15

subdivisions of ventral cavity are lined with..

Answer 15

serous membranes

Question 16

how many layers of serous membranes are there? what are they?

Answer 16

2

parietal layer/visceral layer

Question 17

parietal layer

Answer 17

lines internal surface of body wall

Question 18

visceral layer

Answer 18

covers external surface of organs (viscera)

Question 19

what is serous fluid? what does it act as? what does it reduce?

Answer 19

• liquid secreted by cells in serous membrane
• acts as a lubricant
• reduces friction caused by movement of organs against body wall

Question 20

what are serous membranes arranged like? what does it represent?

Answer 20

serous membranes are arranged like fist in balloon

fist represents body organ

balloon represents serous membrane

Question 21

what are the spaces and structures within the thoracic cavity?
(2 pericardium, 1 cavity)

Answer 21

pericardium

parietal pericardium, visceral pericardium, pericardial cavity

Question 22

what is pericardium and how is it layered?

Answer 22

2 layered serous membrane

Question 23

parietal pericardium

Answer 23

outer layer, which forms sac around the heart

Question 24

visceral pericardium

Answer 24

forms the heart’s external surface

Question 25

pericardial cavity

Answer 25

space between parietal and visceral layers containing serous fluid

Question 26

what is pleura, how is it layered and what is it associated with?

Answer 26

2 layered serous membrane associated with lungs

Question 27

parietal pleura

Answer 27

outer layer lines internal surface of thoracic wall

Question 28

visceral pleura

Answer 28

inner layer covers external surface of lungs

Question 29

pleural cavity

Answer 29

space between parietal and visceral layers containing serous fluid

Question 30

relating to the abdominopelvic cavity, what is the peritoneum?

Answer 30

2 layered serous membrane lining the abdominopelvic cavity

Question 31

parietal peritoneum

Answer 31

outer layer, which lines the internal walls of the abdominopelvic cavity

Question 32

visceral peritoneum

Answer 32

inner layer, which covers the external surface of most abdominal and pelvic organs

Question 33

peritoneal cavity

Answer 33

potential space between parietal and visceral layers containing serous fluid