SCIENCE Q1 EXAM TEST

Humans, when they are not exerting themselves,

breathe approximately ____ times per minute on average.

• 15

• 16

• 17

• 14

______ is both a voluntary and an involuntary event.

• Breathing

• Inhaling

• Exhaling

Breathing is both an involuntary event, it is impossible to override this automatic regulation for activities such as speaking, singing and swimming

under water.

• True

• False

During inhalation the _____ descends creating a negative pressure around the lungs and they begin to inflate, drawing

in air from outside the body.

• Naval Cavity

• Diaphgram

• bronchioles

• Primary Bronchi

The human _____ is a cylinder, about 25 to 30 cm (9.8–11.8 in) long,

• Trachea

• Pharynx

The human Trachea is a cylinder, about __ to __ cm long,

• 25 to 30

• 15 to 20

• 25 to 35

• 20 to 40

The pharynx is also known as the?

• Throat

• Voicebox

• Airway

• Voice path

The larynx is also known as the?

• Throat

• Voicebox

• Airway

• Voice path

Air enters the lungs through the ____

• Primary Bronchi

• Bronchioles

• Bronchi

• Alveoli

The primary bronchus divides, creating smaller and smaller diameter bronchi until the passages are under __ mm

• 1 mm

• 2 mm

• 0.5 mm

• 3 mm