Animal Science AEST Certification Review Part 2

Muscle tone describes the tension that is maintained by paired muscles and ___.

• remains constant as an animal ages

• is a characteristic of healthy animals

• prevents the animal from giving rapid muscular responses

• peaks when the muscle stretches

The air and food passages of an animal cross in the ___.

• larynx

• pharynx

• bronchi

• trachea

The ___ contains vocal cords that vibrate when air passes through them, producing sound.

• nasal cavity

• larynx

• bronchi

• esophagus

The actual exchange of gases in the respiratory system happens in the ___.

• trachea

• heart

• capillaries

• nose

The ___ is a part of the avian (bird) respiratory system.

• syrinx

• nostril

• alveoli

• diaphragm

The respiratory system does all of the following except ___.

• facilitates the exchange of gases

• helps control body temperature

• helps produce sounds

• produces oxygen

Which of the following is not a major part of the circulatory system?

• heart

• arteries

• pancreas

• capillaries

In mammals, the heart has ___ chambers.

• two

• three

• four

• five

The rate of blood flow in the blood vessels is inversely proportional to the ___.

• diameter of the blood vessel

• blood type

• percentage of oxygen in the blood

• percentage of carbon dioxide in the blood

Blood pressure is at its lowest in the ___.

• arteries

• veins

• capillary beds

• heart

Tags

NGSS.HS-LS1-3