1. Mention the organ which is present in thoracic cavity through which food passes from throat to stomach?
a) Trachea
b) Lungs
c) Bronchi
d) Esophagus
Explanation: Esophagus is also known as food pipe. It is a muscular pipe about 8 inches long and is lined by tissue called mucosa.
2. Thoracic cavity is the largest hollow space of the body.
a) True
b) False
Explanation: Thoracic cavity is the second largest hollow space of the body. It is also called a chest cavity. The largest hollow space is abdominal cavity.
3. Accumulation of fluid in pleural cavity is called as ______________
a) Hydrothorax
b) Hyperthorax
c) Hypothorax
d) Haemothroax
Explanation: Accumulation of fluid in pleural cavity is called as Hydrothorax. If a fluid is bloody the condition is called hemothroax and if it contains pus it is called pythorax
4. How many compartments does thoracic cavity have?
a) 3
b) 2
c) 1
d) 4
Explanation: Thoracic cavity has 3 compartments. It has mediastinum and 2 pleural cavities. Mediastinum is a home to heart trachea and vessels. Pleural cavity contains lungs and pleural linings.
5. Which organ is present medial to the lungs and posterior to sternum in thoracic cavity?
a) Trachea
b) Heart
c) Food pipe
d) Diaphragm
Explanation: Heart is a muscular organ in humans. It pumps blood through blood vessels of circulatory system.
6. What is the name of serous membrane that covers thoracic cavity?
a) Myocardium
b) Pericardium
c) Pleura
d) Lining membrane
Explanation: Serous membrane covering heart is called pericardium. The serous membrane lining thoracic cavity and surrounding lungs are called pleura.
7. From where does the aorta originate?
a) Right ventricle
b) Left auricle
c) Right auricle
d) Left ventricle
Explanation: Aorta is the largest artery in the body. The aorta begins at the top of the left ventricle. The heart pums blood from the left ventricle into the aorta through the aortic valve.
8. How many aortic valves are present?
a) 2
b) 3
c) 4
d) 1
Explanation: There are 4 aortic valves are present. They are ascending aorta, aortic arch, thoracic aorta and abdominal aorta.
9. The aorta distributes _______ type blood.
a) Oxygenated blood
b) Deoxygenated blood
c) Mixed blood
d) Cannot be determined
Explanation: The aorta distributes oxygenated blood to all parts of the body through the systemic circulation.
10. Name the valve which is associated with aorta?
a) Mitral valve
b) Aortic valve
c) Tricuspid valve
d) Pulmonic valve
Explanation: The aortic valve is located between the left ventricles and the aorta. Valves maintain one way blood flow through the heart