Advertisements
Advertisements
प्रश्न
Given alongside is a diagram of the external features of the heart.
(i) Name the parts ‘1’ to ‘7’.
(ii) What happens if the coronary artery gets an internal clot?
(iii) Which type of blood does part ‘5’ carry?
(iv) Mention one structural difference between part ‘5’ and ‘4’.
Advertisements
उत्तर
(i)
1. Aorta
2. Left atrium
3. Left ventricle
4. Dorsal aorta
5. Inferior vena cava
6.Superior vena cava
7. Pulmonary artery.
(ii) If the coronary artery gets an internal clot, the corresponding part of the heart does not get its blood supply. This will result in loss of contraction or even death of the cardiac cells resulting in a heart attack or coronary arrest which may prove to be fatal.
(iii) Part ‘5’ which is the inferior vena cava carries deoxygenated blood which is rich in CO2 and metabolic wastes.
(iv) Part ‘5’ is more muscular and the lumen is narrow while part ‘4’ is less muscular and the lumen is wider.
APPEARS IN
संबंधित प्रश्न
Draw a sectional view of the human heart and label on it Aorta, Pulmonary arteries, Vena cava, Left ventricle.
Name the following:
In embryological stage right and left auricles are communicated by.
Choose the correct answer:
Bundle of 'His' is found in ___________
Give Technical Term for the following:
What is the approximate weight of the heart of a man?
State the Function: Bundle of His
The normal human heartbeat rate is about ______ time per minute.
Where is Bicuspid valve located? What is its function?
Fill in the blanks of the following paragraph using just two words – arteries and veins.
___(a)___ carry oxygen-rich blood from the heart to all parts of the body and ___(b)___ carry carbon dioxide-rich blood from all parts of the body back to the heart. ___(c)___ have thin walls and ___(d)___ have thick elastic walls. Blood flows at high pressure in ___(e)___. Valves are present in ___(f)___ which allow blood to flow only towards the heart. ___(g)___ divide into smaller vessels. These vessels further divide into extremely thin tubes called capillaries. The capillaries join up to form ___(h)___.
Why is the sino-atrial node referred to as the pacemaker of the human heart?
If a person has a heart attack, what must be done immediately?
P. Loosen his/her clothing
Q. Make him/her lie down in an airy room
R. Rush him/her to the hospital
S. Engage him/her in a conversation
