MEDIUM
NEET
IMPORTANT
Earn 100
Open circulatory system is present in ___(i)___ and ___(ii)___. Fill the correct option for (i) and (ii).
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Important Questions on Body Fluids and Circulation
HARD
NEET
IMPORTANT
Read the following statements and select the correct option.
Statement 1: The -chambered heart of birds is superior to the -chambered heart of crocodiles.
Statement 2: Crocodilian heart retains both systemic arches that join, causing mixing of blood in the dorsal aorta while the avian heart has lost its left systemic arch.
HARD
NEET
IMPORTANT
The given figure shows the vertical section of the human heart. Identify the parts labelled as A to K.
MEDIUM
NEET
IMPORTANT
Which of the following is correct about human heart?
EASY
NEET
IMPORTANT
Which of the following chambers of the heart has the thickest muscular wall?
MEDIUM
NEET
IMPORTANT
Heart pumps blood more forcefully in older persons than younger ones due to
EASY
NEET
IMPORTANT
Pacemaker is situated in the
MEDIUM
NEET
IMPORTANT
Read the following statements and select the correct option.
Statement 1: The SA node acts as pacemaker.
Statement 2: The SA node is located in the wall of the right atrium near the interatrial septum.
EASY
NEET
IMPORTANT
In which one of the following pairs, two terms represent the same thing?
| (i) | Lymphocyte | erythrocyte |
|---|---|---|
| (ii) | Plasma | serum |
| (iii) | Mitral valve | bicuspid valve |
| (iv) | Atrioventricular node | pacemaker |
