Human beings always have _______.
Heart
Understanding Essential Human Body Parts
The question asks about something that human beings always possess. This implies an organ or feature that is fundamental to being a living human being and is universally present in healthy individuals throughout their life.
Analyzing the Options Provided
Let's consider each option and whether it is something that every human being always has:
- Eyes: Vision is a crucial sense, and most human beings are born with eyes. However, individuals can be born without eyes (anophthalmia) or lose them due to illness, injury, or genetic conditions. Therefore, eyes are not something human beings always have.
- Nose: The nose is vital for breathing and smell. While almost all humans have a nose, severe birth defects or injuries can result in its absence or significant disfigurement, sometimes requiring prosthetic replacements. Thus, a nose is not something human beings always have in a complete, natural form.
- Hand: Hands are essential for performing many tasks. However, congenital conditions (like amelia or phocomelia) can result in a person being born without hands or with underdeveloped hands. Limbs can also be lost due to accidents or diseases later in life. So, hands are not something human beings always have.
- Heart: The heart is a vital organ responsible for pumping blood, delivering oxygen and nutrients throughout the body, and removing waste. The continuous functioning of the heart is necessary for life. A human being cannot survive without a functioning heart (except for brief periods with artificial support like heart-lung machines or transplants). Therefore, as long as a human being is alive, they must have a heart.
Why the Heart is Always Present for Life
The heart is the central component of the circulatory system. Its rhythmic pumping action is what keeps blood flowing, which is critical for every cell in the body to receive oxygen and nutrients and dispose of waste products. Cessation of heart function leads to the rapid failure of other vital organs and death. Thus, the presence of a beating heart is a defining characteristic of a living human being.
Revision Table: Presence of Human Features
| Feature/Organ | Is it Always Present in a Living Human Being? | Explanation |
|---|---|---|
| Eyes | No | Can be absent congenitally or lost later. |
| Nose | No | Can be absent or severely deformed. |
| Hand | No | Can be absent congenitally or lost later. |
| Heart | Yes | Essential for survival; life ceases without it. |
Additional Information: Essential Human Body Parts
The human body relies on several essential or "vital" organs to sustain life. Besides the heart, these include the brain, lungs, liver, and kidneys. While it is possible to live with reduced function of some of these organs or with artificial support for a limited time, none of the other options listed (eyes, nose, hand) are universally essential for merely being alive in the way the heart is.
This analysis confirms that among the given choices, the heart is the only organ that human beings always have as long as they are alive.
Important Questions from Critical Reasoning
As a responsible person, which of the following is not advisable?
- A, B, and C have a few chocolates among themselves. A gives to each of the other two half the number of chocolates they already have. Similarly B and C (in that order) give each of the other two half the number of chocolates each of them already has. Now, if each of them has the same number of chocolates, what could be the minimum number of chocolates they have among themselves?
Given question has main statement followed by four statements. Choose the ordered pair of statements, where the first statement implies the second, and the two statements are logically consistent with the main statement.
When she takes an examination, she clears it.
A. she took an examination
B. she did not take an examination
C. she cleared it.
D. she did not clear it.
You are alone in your house and there is a danger of thieves around. You hear a knock on the door. What should be your most logical action?
While traveling in a train, you notice that a lady from the coach behind you falls from the stairs of the train. What should be your best rational course of action?
