Digestive, Respiratory & Circulatory System

Front

What organ pumps blood throughout the body?

Back

Heart: The heart is a muscular organ that pumps blood through the circulatory system, supplying oxygen and nutrients to the tissues.

Front

What carries blood away from the heart?

Back

Arteries: Arteries are blood vessels that carry oxygen-rich blood away from the heart to the body's tissues.

Front

What is the process of getting rid of carbon dioxide called?

Back

Exhale: Exhaling is the process of breathing out, which removes carbon dioxide from the body.

Front

What are the main functions of the respiratory system?

Back

Breathing and speaking: The respiratory system is responsible for taking in oxygen and expelling carbon dioxide, as well as enabling speech.

Front

When does the mechanical stage of digestion begin?

Back

When food is chewed in the mouth: The mechanical digestion starts in the mouth when food is broken down by chewing.

Front

What is the role of the diaphragm in respiration?

Back

The diaphragm is a muscle that helps in breathing by contracting and relaxing to allow air in and out of the lungs.

Front

What is the function of veins in the circulatory system?

Back

Veins: Veins are blood vessels that carry deoxygenated blood back to the heart.

Front

What is the primary function of the small intestine?

Back

Nutrient absorption: The small intestine is where most of the nutrients from food are absorbed into the bloodstream.

Front

What is the significance of oxygen in the body?

Back

Oxygen is essential for cellular respiration, which produces energy for the body's functions.

Front

What is the role of saliva in digestion?

Back

Saliva helps to break down food chemically and makes it easier to swallow.