Heart (biology)

What’s the main organ of the circulatory system?

the heart

Pumped blood carries?

oxygen and nutrients to tissue with metabolic waste like carbon dioxide

What’s metabolic waste?

substances made during metabolism unusable by a body

What’s metabolism?

the process as a body converts foods/drinks into energy

Where is blood pumped to in a body?

to the lungs

What’s the use of blood getting to the lungs?

to oxygenate the blood

What does oxygenate means?

to receive oxygen

What’s the size of humans often compared to?

a closed fist

Where’s the human heart located?

between the lungs, in the middle compartment of the chest

What does ”compartment” means?

a structure’s section where parts are separated from other

What’s the middle compartment of the chest called?

mediastinum

What’s the etymology of “mediastinum”?

from Latin 'medius' means ‘middle’

How many chambers does a human heart have?

4 chambers

What are upper chambers of a heart called?

the atria

What are lower chambers of a heart called?

the ventricles

What’s the etymology of atrium?

'atrium' (original word) means 'central room/main hall'

Why are upper heart chamber called atria?

because blood enters both deoxygenated/oxygenated blood enters the heart from both atria; where blood is received

At what level of the thoracic vertebrae is the human heart?

T5-T8

What does “thoracic” means?

anything related to the thorax or the chest

What's another word for chest of the human body?

thorax

What does “vertebrae” means?

individual bones making up the spine;

not confused to vertebrate for animals with backones

How many sections comprises the thoracic vertebrae?

12 sections