Respiratory And Cardiovascular Systems

Question 1

What are the 3 main compartments of the thoracic cavity?

Answer 1

Left and right pleural cavity, mediastinum. The mediastinum contains the heart etc.

Question 2

Define respiratory system.

Answer 2

Group of organs which enable the exchange of gases between the blood and atmospheric air.

Question 3

Where are nasal cavities located?

Answer 3

Spaces between nares/nostrils and pharynx. 2 nasal cavities separated by nasal septum. Lateral wall of each contains 3 nasal conchae which humidify the air.

Question 4

What is the pharynx divided into?

Answer 4

Nasal cavity, oral cavity and larynx.

Question 5

What are the blood vessels to the heart?

Answer 5

Vena cava - 2 veins return deox to right atrium.
Pulmonary trunk - artery takes deox from right v to lungs.
Pulmonary veins - 4 veins drain ox blood into left atrium.
Aorta - artery takes ox blood from left v to body.

Question 6

What is the pericardial cavity?

Answer 6

Space between serous layers and contains pericardial fluid. Lubricates layers.

Question 7

What are the 2 main parts of the pericardium?

Answer 7

Fibrous (outer) - parietal lateral lines the fibrous pericardium.
Serous (inner) - 2 layers are continuous.
A visceral layer lines the heart itself.