Answer:
The correct answer will be option-E.
Explanation:
The papillary muscles are the small muscles which arise in ventricles of the heart. These muscles are attached to the atrio-ventricular valves of the heart through chordae tendineae made up of fibrous tissues.
These muscle help prevent the backflow of the blood to the atria during ventricular systole or contraction. These muscle gets activated before the contraction which pulls the chordae tendinae attached to the cusps of the valve, thus closes the leaflets.
Thus, option- E is the correct answer.
Answer: Our superior extremities would have grown more larger but not thicker than ourselves.
Explanation: We haven't to use our superior extremities to move. But if humans were to walk on "all fours", we expect our bone sizes to evolve as form fits function
I think sister groups. Imagine them having the same parents.
The answer is : A compound light microscope has much greater magnification power than a dissecting microscope. Compound Microscopes have greater magnifications, but lower resolutions than the Dissecting microscopes. Compound light microscopes are usually used to view things that are too little to see with the naked eye.
D JURASSIC PERIOD BECAUSE THEY CAME UP WHEN DINOSAURS CAME
