Animal Systems Review 2

What is produced by the skin for protection against harmful ultraviolet light?

• Keratin

• Melanin

• Sweat

• Oil

What helps the body create Vitamin D?

• Sweat

• Oil

• The sun

• Keratin

Blood leaving the right ventricle enters the _________.

• Superior vena cava

• Inferior vena cava

• Pulmonary artery

• Pulmonary vein

The left lung is composed of how many lobes?

• One

• Two

• Three

• Four

Identify the waste gas removed from the blood during expiration.

• Oxygen

• Carbon dioxide

• Water

• All of the above

The wall separating the left side of the heart from the right side is the _____.

• Sulcus

• Bronchus

• Atrium

• None of the above

Which structures prevent heart valves from being forced backward into the wrong chamber?

• Sulci

• Bronchi

• Cusps

• None of the above

Which structure holds the chordae tendineae to the interior walls of the heart?

• Sulci

• Bronchi

• Papillary muscles

• None of the above

The SA node is located in the _________.

• Right ventricle

• Right atrium

• Left ventricle

• Left atrium

The trachea divides into two branches called the _________.

• Sulci

• Bronchi

• Chordae tendineae

• Cusps