Respiratory and Circulatory System

The union of oxygen with food and the accompanying release of energy, water and carbon dioxide.

The exchange of gases between the atmosphere and the blood

The biochemical process that takes place in the mitochondria of the cell

The exchange of gases between the blood and body cells

Air enters the _______, passes through the __________, the________ through the _________ into the ___________ into the right and left _________ which branches and rebranches into _________, each of which terminates in a cluster of _________.

____________ Consists of the external visible part, supported by cartilage, and the inner nasal cavity that is divided into left and right halves by _______________

A narrow tube composed of muscles and membrane.

Pharynx is divided into three:

A portion of pharynx that lies behind the mouth

A portion of pharynx that lies behind the nose

A portion of pharynx behind the larynx

It is a funnel-shaped organ about 5cm long and links the pharynx to the bacteria.

Attaches the larynx through the trachea

Biggest piece of cartilage

A pair of cartilage that anchors the vocal chord

It is a fibrocartilage protecting the glottis

Forms the lateral and posterior walls of the larynx

Elevate the larynx during swallowing

When contracted changes the length, tension and position of the vocal chords.

Connects bones and cartilage together

It is sometimes known as the "voice box" cause it contains the vocal chords that produce sound when vibrated by air.

A narrow opening of the larynx that conveys air to the trachea

It is protected by a lid of fibrocartilage known as epiglottis.

Glottis is protected by a lid of fibrocartilage known as

Is a cylindrical tube approximately 5 inches long which serves as passageway of air to reach the lungs.

Another name for trachea

Subdivisions of the trachea

The first subdivision is the primary bronchi, each inserts into the lungs through a slit-like opening called

Smallest subdivision of the bronchi

Their distal ends lead to small ducts which in turn lead to the air sacs.

Composed of several microscopic outpocketings

The functional units of the lungs where actual gas exchange occurs.

It is consists of single layer of squamous epithelium surrounded by network of capillaries(pulmonary blood capillaries)

Are cone-shaped organs that completely fill the pleura spaces of the thoracic cavity.

Each lung is enclosed by saclike memberane known as

Is tightly attached to the lung surface

Attach to the thoracic cavity

At the base of the lung is a muscular shelf known as ____ that separates the abdominal cavity(contains viscera like stomach and small intestine) and the thoracic activity(contains the heart and lungs)

The space in between the pleura is the _____ that lubricates the surface of the lungs allowing for respiration with minimal friction

Inflammation of pleural membrane

The process of drawing air into the lungs and its expulsion

That stimulates the diaphragm and intercostal muscles to contract making us to inhale

Smoothens the basic rhythm of inhalation and exhalation set by the medulla keeping the breathing in tune with the body needs