How does the Diaphrgan facilitate breathing? a.) To breathe in, the diaphragam moves caudally to decrease the volume of the thoracic cavity. b.) To breathe in, the diaphragam moves cranially to increase the volume of the thoracic cavity. c.) To breathe in, the diaphragam moves caudally to increase the volume of the thoracic cavity. d.) To breathe in, the diaphragam moves cranially to decrease the volume of the thoracic cavity.

How does the Diaphrgan facilitate breathing? a.) To breathe in, the diaphragam moves caudally to decrease the volume of the thoracic cavity. b.) To breathe in, the diaphragam moves cranially to increase the volume of the thoracic cavity. c.) To breathe in, the diaphragam moves caudally to increase the volume of the thoracic cavity. d.) To breathe in, the diaphragam moves cranially to decrease the volume of the thoracic cavity.

Concepts of Biology

1st Edition

ISBN:9781938168116

Author:Samantha Fowler, Rebecca Roush, James Wise

Publisher:Samantha Fowler, Rebecca Roush, James Wise

Chapter16: The Body's System

Section: Chapter Questions

Problem 13RQ: Which is the order of airflow during inhalation? a. nasal cavity, trachea, larynx, bronchi,...

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Which is the order of airflow during inhalation? a. nasal cavity, trachea, larynx, bronchi, bronchioles, alveoli b. nasal cavity, larynx, trachea, bronchi, bronchioles, alveoli c. nasal cavity, larynx, trachea, bronchioles, bronchi, alveoli d. nasal cavity, trachea, larynx, bronchi, bronchioles, alveoli
When the diaphragm contracts, it tenses and moves inferiorly, causing(a) an increase in the volume of the thoracic cavity. (b) a decrease in the volume of the thoracic cavity. (c) decreased pressure on the contents of the abdominopelvic cavity. (d) increased pressure in the thoracic cavity.
The muscles attached to the ribcage and the diaphragm control the lungs'...a.) volumeb.) pressurec.) temperatured.) none of the above
Which one of the following is a possibility for most of us in regard to breathing, by making a conscious effort? Justify your option. a) One can consciously breathe in and breathe out by moving the diaphragm alone, without moving the ribs at all b)The lungs can be made fully empty by forcefully breathing out all air from them c)One can breathe out air totally without oxygen d) One can breathe out air through eustachian tubes by closing both the nose and the mouth
Which one of the following is a possibility for most of us in regard to breathing, by making a conscious effort? (a) One can breathe out air totally without oxygen. (b) One can breathe out air through Eustachian tube by closing both nose and mouth. (c) One can consciously breathe in and breathe out by moving the diaphragm alone, without moving the ribs at all. (d) The lungs can be made fully empty by forcefully breathing out all air from them. (Mains 2011)
43) During quiet inhalation, which respiratory muscles contract?a) Diaphragm and external intercostalsb) Diaphragm and internal intercostalsc) Internal and external intercostalsd) Diaphragm and external obliquese) Diaphragm and internal obliques 48) Exercise bring about an increase ina) pulmonary perfusion.b) oxygen diffusion capacity.c) carbon dioxide retention.d) both a and b.e) both b and c. 50) During normal quiet breathing, which of the following stimulates the diaphragm?a) Pontine respiratory groupb) Dorsal respiratory groupc) Ventral respiratory groupd) Dorsal and ventral respiratory groupse) All of the above
Which of the following is TRUE of airway resistance in the respiratory system? O a) Resistance increases with increasing lung volume b) Resistance decreases with increasing lung volume Oc) Resistance decreases when bronchi are exposed to acetylcholine d) Resistance increases when bronchi are exposed to norepinephrine
62. Which of the following events occurs during the expiratory phase of respiration? A) Contraction of the external intercostal muscles B) Elevation of the ribs C) Increase in thoracic volume D) Relaxation of the diaphragm E) Widening of the costal margin
Which of the following is the respiratory membrane composed of? A) respiratory bronchioles and alveolar ductsb) respiratory b) bronchioles and alveolar sacs c ) alveolar sacs and alveolar ducts d) alveolar and capillary walls and their fused basement membranes
When the inspiratory muscles contract, (a) only the lateral dimension of the thoracic cavity increases, (b) only the anteroposterior dimension of the thoracic cavity increases, (c) the volume of the thoracic cavity decreases, (d) both the lateral and the anteroposterior dimensions of the thoracic cavity increase, (e) the diaphragm bulges superiorly.
In exhalation, which pressure should be HIGHER?a.) pressure in the lungsb.) atmospheric pressurec.) the pressure should be the same
Describe two ways in which atmospheric air can enter thepleural cavity.