Ch. 8 Respiratory System

three key disruptions of respiratory function can lead to disease

1. interference of air flow 2. interference with diffusion of gases at the respiratory membrane 3. blocked/reduced blood flow through alveolar capillaries

Cilia

Hairlike projections

T/F? False RBCs not WBCs

Hemoglobin molecules within WBCs bind oxygen for transport to tissues

T/F? False Thick-walled sacs

T/F? Alveoli are thick-walled sacs surrounded by blood capillaries.

Pharynx

Throat

Trachea is also called the

Windpipe (also known as)

larynx

an organ of the respiratory system located at the entrance of the trachea that contains the vocal cords

T/F? True

carbon dioxide diffuses primarily from blood plasma to alveoli to be expired or inhaled

increases volume within chest cavity

contraction of these muscles...

Pleura

double membrane consisting of two layer of the pleura containing a small amount of fluid that lubricates the surfaces, preventing friction as the lungs expand and contract

T/F? True

inspired or inhaled oxygen diffuses across pulmonary membrane from alveoli into the capillary blood

ausculation

listening to chest with a stethoscope

Respiratory Epithelium

mucous membrane that lines entire respiratory tract

external intercostals

muscles between the ribs

intrapleural pressure

pressure within the pleural cavity

Diaphragm

primary muscle for inspiration that divides he thoracic cavity from the adominopelvic cavity

decreases volume within chest cavity

relaxation of these muscles...

alveoli

small air sacs in the lungs where gas exchange occurs

bronchioles

small soft tissue tubules with smooth muscle wrappings that connect small bronchi to alveolar structures

percussion

tapping on chest; note raised and vibration felt gives clues to state underlying lung and pleura

bronchi

tubular passageways from the trachea to the lungs

Trachea

tubular structure that connects the larynx to the primary bronchi of the lungs

Laynx is also known as

voice box (also known as)