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82 Cards in this Set

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Gross Anatomy

Is the study of organs and structures of human body visible to naked eye.

How many lobes are the right lungs?

Superior, middle, inferior

How many lobes in the left lung?

Superior and inferior

Hilum

Root of the lung

Pleurae

Membranes that cover the surface of the lung and the cavity surrounding the lungs.

Visceral pleura

Directly covers the lungs

Parietal pleura

Covers the surfaces surrounding the lungs: rib cage, diaphragm, and mediastinum

Pleural space or cavity

Space that is formed between the pleurae. Normally, scant amount of fluid.

Diseased state of lungs

Cavity fill with air or fluids.

Function of pleurae

Reduce friction and provide a negative pressure environment needed for lung inflation. Also help to pull the lungs open with the chest wall during inhalation

The respiratory system to perform 3 main functions:

Air conduction


Air filtration


Exchange of gases (respiration)

Conducting portion

Nostril- nasal cavities


Pharynx- nasopharynx, oropharynx, laryngopharynx


Larynx


Trachea


Paired main(primary) bronchi (plural form of bronchus)


Bronchioles: secondary and tertiary

Filtration portion

Nostrils: hairs, cilia, and mucus producing goblet cells


Trachea and bronchi: cilia and mucus producing goblet cells

Respiratory portion

Respiratory bronchioles


Alveolar ducts


Alveolar sacs


Alveoli

How does conduct air to and from the lungs

Air moves through the nasal cavity, pharynx, larynx, trachea, and bronchi to the lungs

Nasal cavities or fossae

Composed of bone and cartilage, made up of several parts. Left and right fossae are separated by the nasal septum

Vestibule

Most external portion


Lined with stratified squamous epithelium which is a continuation of the skin from the face

Vestibule

Most external portion


Lined with stratified squamous epithelium which is a continuation of the skin from the face

Vibrissae

Short thick hairs


Act as a screening device for the respiratory tract

Danger of aspiration

When food or liquid accidentally enters the trachea.

Glottis

Opening into the larynx or voice box

Vocal folds

At the edges of the glottis, embedded in mucous membranes

How does sound occurs?

Flexible and pliable bands of connective tissue vibrate and produce sound when air is expelled past them through the glottis from the larynx.

Expectorated

Spit up

Aspiration

Refers to bits of food, liquid, or particles that travel into the trachea

Pneumonia

Infection of the lungs, if there is a large amount of food or liquid that is aspirated and travel to the lungs.

Epiglottis

The trachea is closed by a flap of tissue

Swallowing process

Larynx rises, and the trachea is closed


Epiglottis moves inferiorly cover the trachea to prevent food or liquid from entering the lungs


Posterior and superior movement of the soft palate covers the entrance of the nasal passages.


The upward movement of the soft palate prevents food or liquid from entering the nasal passages

Esophagus

Which lies posterior to the larynx and trachea

Main bronchi

Enter the right and left lungs

Bronchioles

Branches into a great number of smaller passages

Bronchi

represent the transition from the single conduction pathway of the upper airways into large surface area required for gas exchange

Respiratory epithelium

Lined the entire bronchial tree.

Terminal bronchioles

Smallest air conducting bronchioles

Respiratory bronchioles

The transitional zone in the respiratory system concerned with both air conduction and gas exchange

Concentration gradient

Moving from higher to lower concentration. Generally, oxygen moving into blood and carbon dioxide moving out of the blood

Histology

Study of the cellular anatomy of a tissue or organ that can be viewed through a microscope

Cilia

Small hair-like projections

Apical side

Apex or top of the cells

Pseudostratified

Appear to be in layers

Basement membrane

Floor of epithelial tissue

Columnar

Taller than they are wide

Goblet cells

Mucus producing cells , present within the epithelium of the respiratory tract

Stratified squamous epithelium

Found in multiple flattened layers

Simple squamous

Single layer of flattened cells

Surfactant

Lipoprotein covers luminal surface and keeps the alveoli from sticking together during exhalation

Premature babies

Have respiratory problems after birth and need to remain hospitalized until their lungs fully develop

Type I alveolar cells

95% of alveolar epithelium; form very thin, simple squamous epithelium of the alveoli in junction with capillaries

Type II alveolar cells

5% of alveolar epithelium; produce and secrete pulmonary surfactant


Can divide to replace damaged Type I cells

Alveolar macrophages

Phagocytize toxic particles, allergens, or infectious material. Primary immune defense system of the alveoli. It migrates toward the ciliary surface of the bronchiolar system

Breathing

Inspiration (breathing air in)


Expiration (breathing air out)

External respiration

Gas exchange with the environment at a respiratory surface

Internal respiration

Gas exchange between blood and tissue fluid

Aerobic cellular respiration

Production of ATP cells

For diffusion to be effective, the gas-exchange must be

Moist


Thin


Large in relation to the size of the body

Ventilation

Happens when the lungs move air into respiratory tract and out of the respiratory tract

What occurs during inhalation

Rib cage lifts superiorly and anteriorly to open up and expand the lungs

What occurs when exhalation?

Rib cage lowered, diaphragm rises the thoracic pressure increases and air move out of the lungs

Incomplete ventilation

The air entering mixed with used air remaining in the lungs. Helps to converse water and maintain constant temperature.

Diffusion

Accounts for exchange of gases between the air in alveoli and the blood in the pulmonary capillaries.

Diffusion

Accounts for exchange of gases between the air in alveoli and the blood in the pulmonary capillaries.

Pulmonary capillaries are ?

Oxygen-poor

Alveolar air is what?

Oxygen rich

Boyle’s law

Pressure of given quantity of gas is inversely proportional to its volume. Relationship between gas and pressure.

Charles’s law

The volume of a given quantity of gas is directly proportional to its temperature.


The higher the temperature then greater volume or the lower the temperature then lower gas volume

Charles’s law

The volume of a given quantity of gas is directly proportional to its temperature.


The higher the temperature then greater volume or the lower the temperature then lower gas volume

Dalton’s law

Total pressure of a gas mixture is equal to the sum of the partial pressure of the individual gases.


The concentrations and partial pressures of gases will affect the diffusion of those gases.

Spirometer

Measurements of pulmonary ventilation

Spirometer

Measurements of pulmonary ventilation

Tidal Volume (TV)

Amount of air inhaled and exhaled in one cycle of quiet breathing. Typically about 500mL of air.

Inspiratory Reserve Volume(IRV)

Maximum amount of air able to be inhaled beyond normal inhalation. Typically 3000ml of air

Expiratory Reserve Volume (ERV)

Maximum amount of air able to be exhaled beyond normal exhalation, typically around 1200mL of air.

Residual Volume(RV)

Amount of air remaining in lung that cannot be exhaled, typically 1300mL of air.

Vital Capacity (VC)

ERV + TV + IRV

Total Lung Capacity (TLC)

VC + RV

Inspiratory Capacity (IC)

TV + IRV


Or


VC- ERV

Functional Residual Capacity (FRC)

RV+ ERV

Respiratory rate (RR)

Measured in breaths per minute

Emphysema

Cause damage to the alveoli. The damage cause the inner walls to become weak and rupture.

Smoking is often cause of this disease

Cystic fibrosis

Hereditary disease. Cells produce mucus without enough saline. Causes mucous to become too thick so it clogs the respiratory tract.

Can lead to respiratory failure

Pulmonary edema

Accumulation of fluid in the lungs.

Caused by infections, cancers, and congestive heart disease

Pleurisy

Inflammation of the pleura( lining of the lungs). When the space is filled with air, pus, blood or their fluids.