Respiratory System Concepts Assessment

This video tutorial explains the respiratory system, focusing on the exchange of gases like oxygen and carbon dioxide. It covers the path air takes from the nasal cavity through the trachea to the lungs, highlighting the role of the diaphragm, pharynx, and trachea. The video details how air is filtered by cilia and mucous membranes, and describes the structure and function of bronchi, bronchioles, and alveoli. The process of gas exchange at the alveoli is explained, emphasizing diffusion and the role of capillaries. The tutorial concludes with a review and practice quiz on the respiratory system parts.

What is the primary function of the respiratory system?

• To exchange gases like oxygen and carbon dioxide

• To circulate blood

• To produce hormones

• To digest food

Which muscle is crucial for pulling air into the lungs?

• Diaphragm

• Triceps

• Quadriceps

• Biceps

What role does the nasal cavity play in the respiratory system?

• It produces sound

• It pumps blood

• It filters and warms the air

• It digests food

What is the function of the cilia in the pharynx and trachea?

• To secrete hormones

• To absorb nutrients

• To trap and filter out irritants

• To produce mucus

What prevents food from entering the trachea?

• The bronchi

• The diaphragm

• The alveoli

• The epiglottis

What are the bronchioles responsible for in the respiratory system?

• Pumping blood

• Digesting food

• Increasing surface area for gas exchange

• Producing mucus

How does oxygen move from the alveoli into the bloodstream?

• Through capillary action

• By diffusion from high to low concentration

• Through active transport

• By osmosis

What happens to carbon dioxide in the alveoli?

• It is stored in the lungs

• It diffuses out of the capillaries into the alveoli

• It is absorbed into the bloodstream

• It is converted into oxygen

What is the appearance of alveoli compared to?

• A cluster of grapes

• A pile of leaves

• A bunch of bananas

• A stack of pancakes

What color change indicates oxygen-rich blood in the capillaries?

• Red to blue

• Blue to green

• Green to yellow

• Blue to red