Exchange Surfaces 2 Key Words

Question 1

Pleural sac/visceral pleura

Answer 1

Envelopes the lung

Question 2

Parietal pleura

Answer 2

Lines ribcage, covers upper surface of diaphragm

Question 3

Pleural fluid

Answer 3

Found between inner and outer pleura, reduces friction

Question 4

Simple cuboidal epithelial cells

Answer 4

Epithelial cells lining bronchioles. Wide as tall with central nucleus.

Question 5

Squamous epithelium

Answer 5

Epithelial tissue lining alveoli

Question 6

Phrenic nerve

Answer 6

Mixed motor/sensory nerve originates from C3-C5 spinal nerves in neck. Important for breathing, provides exclusive motor control of diaphragm

Question 7

Autonomic motor system

Answer 7

largely unconscious control system:

regulates bodily functions (heart rate, digestion, respiration rate, pupillary response, urination & sexual arousal)

Question 8

External intercostal muscles

Answer 8

Responsible for rib elevation and opening to expand transverse dimensions of thoracic cavity

Question 9

Internal intercostal muscles

Answer 9

Responsible for rib depression, bending inwards

Question 10

Thoracic cavity

Answer 10

aka chest cavity, vertebrate cavity bound by ribcage on sides and top, and diaphragm on bottom. Bound by thoracic vertebrae connected to ribs surrounding cavity