Answer:
The correct answer is D.
Explanation:
Papillary muscles, attached via chordae tendineae, help to close the valves and prevent regurgitation.
Pectinate muscles are parallel ridges in the walls of the atrium of the heart, mainly in right atrium. They can stretch during adverse loading conditions, to <em>help the right atrium to dilate without much wall stres</em>s.
Nutritional deprivation during lactation decreases the quantity of milk she produces. It does not affect the macronutrients or minerals, but some vitamins will be lower in breast milk if her intake and stores are low.
The answer for this question is ‘Epidemiology’
