Circulatory System
What is the circulatory system?
This body system transports nutrients, oxygen, waste products, and hormones throughout the body.
What is the nose?
This is the primary entry point that filters, warms, and humidifies air.
What is DNA?
The molecule that carries genetic information.
What are the heart, blood, and blood vessels?
These three structures make up the circulatory system.
What is the trachea?
This tube carries air from the larynx to the bronchi.
What are Adenine, Thymine, Cytosine, and Guanine?
These are the four nitrogen bases found in DNA.
What are carbon dioxide and urea?
The waste products transported by blood include these two major substances.
What are cilia?
These tiny hair-like structures in the bronchi help sweep out mucus and dust.
What is phenotype?
An organism’s observable physical traits are known as this.
What is hemoglobin?
This protein in red blood cells binds to oxygen.
What is the diaphragm?
This dome-shaped muscle at the base of the lungs helps with inhalation and exhalation.
What is homozygous?
When both alleles are identical, such as BB or bb, the genotype is described as this.
What is a bi-concave disc shape?
Red blood cells have this shape, which increases surface area for gas exchange.
What are bronchioles?
These small branching tubes lead directly to the alveoli.
What is 46 (23 pairs)?
Humans have this many individual chromosomes in total.