Respiratory Rates

Question 1

Breathing or pulmonary ventilation has 2 processes

Answer 1

Inspiration and expiration

Question 2

Atmosphere —>bronchial tree

Answer 2

Inspiration

Question 3

Bronchial tree —> atmosphere

Answer 3

Expiration

Question 4

The process is facilitated by
But brought about by

Answer 4

Pressure gradient
Intercoastal muscles, diaphragm and abdomen muscles

Question 5

Normal inspiration (active)
Medulla

Answer 5

Diaphragm contracts anterio posteriorly
External intercoastal muscles contracts dorso ventrally

Question 6

Normal expiration (passive)
Medulla

Answer 6

Diaphragm relaxes to become dome shaped
External intercoastal muscles relaxses

Question 7

Forceful inspiration (active)
Cerebrum

Answer 7

Contraction of diaphragm and external i.c
(Inspired air increases on a much higher level…..500+2500-3000)

Question 8

Forceful expiration (active)
Cerebrum

Answer 8

Contraction of abdomen muscles and internal intercoastal muscles

RelaxAtion of diaphragm and external intercoastal muscles

Question 9

Normal breath rate=

Answer 9

12-16bpm
(1b=1insp+1exp)