Chapter 22 Respiratory system

अब Quizwiz के साथ अपने होमवर्क और परीक्षाओं को एस करें!

Hyperventilation causes a ________ in the blood concentration of CO2, and thus ________ the rate of respiration.

Decrease; decreases

Suppose a patient is receiving oxygen by mask. Are their arterioles leading to the oxygen-enriched alveoli dilated or constricted?

Dialated

Which of the disorders below is characterized by destruction of the walls of the alveoli producing abnormally large air spaces that remain filled with air during exhalation?

Emphysema

What respiratory system organ can the Vestibular folds be found on?

Larynx

Which of the following is the leading cause of cancer death for both men and women in North America?

Lung

Which law explains the ever-changing situation between gases in the lungs and the capillaries, due to partial pressures, temperature and solubility

Henry's Law

What is hyperpnea?

Increase in ventilation (10 to 20 fold) in response to metabolic needs.

During inspiration, the volume of the lungs ________.

Increases

Why is having a lot of alveolar sacs important?

It increases surface area

What is another term for pharyngeal tonsils?

adenoids

approximately 300 million ___________ account for most of the lung's volume and are the main site for gas exchange.

alveoli

What is the most common method of carbon dioxide transport?

as bicarbonate ions in the plasma

According to this spirographic record, what is the total volume of exchangeable air for a normal male?

4800 milliliters

What is the minute ventilation of an average adult male at rest breathing at a rate of 10 breaths per minute?

5000 milliliters per minute

A person has a breathing rate of 12 times per minute. Their tidal volume is 487ml. What is their Minute Respiratory Volume (MRV)?

5844 mm per minute MRV= (Tidal Volume x Respiration Per Minute)

Ventilation is ________.

movement of air into and out of the lungs

This portion of the upper respiratory system serves only as an air passageway.

nasopharynx

Which of the following is the primary factor in oxygen's attachment to, or release from, hemoglobin?

partial pressure of oxygen

Inspiratory neurons send information to the diaphragm via what nerve?

phrenic nerve

The trachea divides into ________ bronchi that lead to the lungs.

2

Air passages undergo how many orders of branching?

23

Emphysema can result in an ______.

-increased level of carbaminohemoglobin -increased level of deoxyhemoglobin -increased likelihood of the skin of Caucasians developing a slightly blue coloration

What directly stimulates the central chemoreceptors, thus increasing respiration?

H+ (hydrogen ions)

Where can adenoids be found?

Nasopharynx

In higher altitues, such as Mt. Everest, there is a lesser amount of what?

Oxygen saturation

Main broncus. --> Lobar (secondary) bronchus. --> ___________________. --> Terminal bronchioles

Segmental (teriary) bronchi

In the respiratory membrane, TYPE I ALVEOLAR CELLS are made up of a single layer of what type of tissue?

Simple squamous epithelium

Which is NOT one of the three main factors that influences external respiration?

Temperature of the respiratory membrane

Where in the lungs would constriction occur (as in asthma)?

Terminal Bronchiole

How will the lungs compensate for an acute rise in the partial pressure of CO2 in arterial blood?

The lungs compensate by increasing respiratory rate

Damage to The ventral respiratory group what would most likely result in _________________________.

a cessation of breathing

The erythrocyte (red blood cell) count increases after a while when an individual goes from a low to a high altitude because the ________.

concentration of oxygen and/or total atmospheric pressure is lower at high altitudes

What is the conducting zone of the respiratory system?

conduits to gas exchange sites

When resistance increases, flow:

decreases

If someone is hyperthermic, their breathing is_________.

heavily slowed

The vital capacity, or maximal amount of air that one can move, is the sum of ________.

inspiratory reserve volume, tidal volume, and expiratory reserve volume

Which receptors inhibit inspiration during hyperinflation of the lungs?

pulmonary stretch receptors

A homeostatic control mechanism controls respiration. What acts as the effector(s) in this system?

respiratory muscles

The trachea branches into _______________________.

right and left primary bronchi

Which of the main bronchi is larger in diameter, shorter, and more vertical?

right main bronchus

Which of the following stimuli is the most powerful respiratory stimulant to increase respiration?

rising carbon dioxide levels

What stimulates increased respiration at the beginning of exercise?

sensory input from receptors in joints, neural input from the motor cortex, and other factors

What is the respiratory zone?

site of gas exchange

baby is sexy

so very sexy

Surfactant decreases the __________ in the alveoli.

surface tension

To measure forced vital capacity (FVC) and forced expiratory volume (FEVT), the subject should ________.

take a deep inspiration, then rapidly and forcefully exhale as much air as possible.

To compute inspiratory reserve volume (IRV), one would need to know ________.

tidal volume, vital capacity, and expiratory reserve volume

minute respiratory volume can be computed if one knows ________ and ________.

tidal volume; respiratory rate


संबंधित स्टडी सेट्स

AP Gov Economic and Monetary Policy

View Set

Troubled Debt - Settlement, Modification 1

View Set

MGMT 490: Chapter 6 - Learnsmart, Activity and Quiz questions

View Set