The vessels which stick to the walls of heart are ………
A) Arteries
B) Veins
C) Coronary vessels
D) Pericardium
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a. Amphibians and reptiles have a 3 chambered heart with ___atria and ___ventricle. b. heart is ___derived organ and protected by a double walled memb
Correct Answer - a. 2,1 b. Mesodermal,Pericardium c. 3,Tricuspid d. Thicker. e. 72, Pacemaker f. 30% g. Joint diastole h. P i. Coronary j. Decrease, Cardiac output
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What are the types of the following changes? Natural waterfall, spreading of smoke from burning incense stick, diffusion of fragrance of flowers.
Natural waterfall, spreading of smoke from burning incense stick and diffusion of fragrance of flowers are irreversible physical changes.
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(i) Chalk contains calcium, carbon and oxygen in the ratio 10:3:12. Find the percentage of carbon in chalk. (ii) If in a stick of chalk, carbon is 3g,
Correct Answer - (i) 12% (ii) 25g
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why does the smell of incense stick spreads faster than the perfume
The molecules of the sticks fits between the spaces in the molecules of the atmosphere. So, it spreads quickly.
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The blood vessels that supply blood to the heart muscles …………
C) Coronary arteries
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What is the shape of the heart that you found through the activity with the help of specimen of goat’s heart ?
(B) Pear fruit
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If you bite by a stick on your palm, how do you escape from a larger impulse on your hand ?
A) By pulling down your palm along the direction of the stick
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If you bite by a stick on your palm, how do you escape from a larger impulse on your hand ?
2 Answers
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Why is the mammalian heart known as a myogenic heart?
The mammalian cardiac muscles are modified and are capable of generating an impulse on their own. Hence, the mammalian heart known as a myogenic heart.
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Which one of the following types of cell is involved in making of the inner walls of large blood vessels?
(c) Squamous epithelium
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