Respiratory & Excretory System

Which structures filter and moisten air as it passes through the human respiratory system?

• cilia and mucous membranes

• alveoli and cartilage rings

• diaphragm and bronchioles

• epiglottis and bronchi

Which respiratory structure is supported by rings of cartilage?

• trachea

• alveolus

• bronchiole

• pharynx

What will most likely happen when food is in the trachea?

• The food will interfere with the passage of air to the alveoli

• The food will undergo emulsification and deamination

• The food will be moved down to the stomach by peristalsis

• The food will be completely digested as a result of enzyme action

Which sequence correctly indicates the branching pattern of the human respiratory system?

• trachea--> bronchi -->bronchioles--> alveoli

• trachea--> bronchioles--> bronchi --> alveol

• alveoli --> trachea --> bronchioles --> bronchi

• alveoli --> bronchioles --> trachea --> bronchi

When humans exhale, air passes from the trachea directly into the

• bronchioles

• alveoli

• bronchi

• pharynx

Which statement best describes the function of the respiratory passageways of a human?

• They permit digestive end-products to make contact with body cells

• They permit exchange between the external atmosphere and the circulatory system.

• They transport gaseous cellular wastes from body cells to the lungs for excretion

• They regulate the amount of ammonia and salt dissolved in body fluids

A humidifier is a device that adds moisture to dry air. Which part of the human respiratory system has the same function?

• Nasal cavity

• Epiglottis

• Diaphragm

• Cartilage Rings

Which structures in the nasal cavity remove some bacteria and dust from outside air before it enters the lungs?

• rings of cartilage

• lymph nodes

• thin, moist alveoli

• ciliated mucous membranes

Which statement best describes the human respiratory system?

• Each cell of the human body is in direct contact with the external environment, and gas exchange occurs by diffusion

• The external body surface is kept moist to allow for gas exchange

• It is composed of a network of moist passageways that permit air to flow from the external environment to the lungs

• Gases diffuse across membranes on both the external and internal surfaces of the body

What is the main function of gas exchange

• To remove carbon dioxide and supply oxygen to the body

• To remove oxygen from the body

• To supply carbon dioxide and remove oxygen from the body

• To supply water to the body cells