Happiness does not differentiate the young-old from the old-old, it will never depend, nor be conditioned by age, comes from different sources and forms, a person can be 60 years old and be happy for a reason totally different from an 80 years old, unlike health, work or money, which probably depends a little bit more on the physical condition granted by age.
The strong force has a range of about the width of an atomic nucleus, and is responsible for binding protons and neutrons together. Like electromagnetic force, the nuclear forces are governed by gauge bosons.
Answer:
mitral valve
Explanation:
The mitral valve and tricuspid valve are located between the atria (upper heart chambers) and the ventricles (lower heart chambers).
Answer: option C) enables the "let-down" reflex to occur when a woman breastfeeds her baby.
Explanation:
Oxytocin is a hormone secreted by the posterior pituitary gland. It stimulates the contractions of smooth muscles such as
- uterus facilitating childbirth
- ducts of the mammary glands resulting in ejection of milk. Thus, it is also called as milk-let-down-ejection factor.
So, option C is the correct answer
