First, identify each structure Indicated In the diagram on the next page. Then m

ID: 174234 • Letter: F

Question

First, identify each structure Indicated In the diagram on the next page. Then mate structure with its correct function and place the corresponding letter in the parentheses. 3 has been ne for you with no corresponding definition. A secondary airway Sacs inside the lungs where gas exchange takes place Muscle that separates the thoracic and abdominal cavity One of a pair of lobed. organs involved in gas exchange; primary organ of the respiratory system The site of sound production The airway that connects the nasal cavity with the larynx Primary airway that warms and filters (with hairs) incoming air Protective bone structure surrounding lungs Airway that connects upper and lower respiratory system; windpipe) The 2 bronchi lead to increasingly branched____. Cartilage tissue that covers the trachea; separates the respiratory system from the digestive system Large air tube that connects each lung to the trachea

Explanation / Answer

alveoli

tiny sacs within our lungs that allow oxygen and carbon dioxide to move between the lungs and bloodstream

Bronchioles

branches of the bronchi

Alveolar sac

Alveolar sacs contain tiny pouches called alveoli, whose primary function is gas diffusion

Oral cavity/mouth

the secondary external opening for the respiratory tract

Lungs

Primary organs of respiration. Their function in the respiratory system is to extract oxygen from the atmosphere and transfer it into the bloodstream, and to release carbon dioxide from the bloodstream into the atmosphere, in a process of gas exchange

Ribs

the long curved bones which form the rib cage

Diaphragm

dome-shaped muscular partition separating the thorax from the abdomen in mammals. It plays a major role in breathing

Nasal cavity

a large air filled space above and behind the nose in the middle of the face

Pharynx

part of the throat that is behind the mouth and nasal cavity and above the oesophagus and the larynx

Epiglottis

epiglottis is a flap made of elastic cartilage tissue covered with a mucous membrane, attached to the entrance of the larynx

Larynx

voice box

Trachea

cartilaginous tube that connects the pharynx and larynx to the lung

Bronchi

an airway in the respiratory tract that conducts air into the lungs. There is a right bronchus and a left bronchus