Question

What tends to decrease airway resistance? a) acetylcholine release b) asthma c) exhalation to residual volume...

What tends to decrease airway resistance?

a) acetylcholine release

b) asthma

c) exhalation to residual volume

d) histamine release by mast cells

e) sympathetic stimulation

Homework Answers

Answer #1

e) Sympathetic stimulation

Explanation: Sympathetic stimulation through adrenergic beta 2 receptors located on the bronchi results in bronchodilation leading to increase diameter of the airway that decreases the airway resistance and hence increases the airflow.

Parasympathetic stimulation causes the bronchoconstriction. This decreases the airflow and increases the airway resistance.

Asthma is the allergic condition that causes bronchoconstriction.

histamine also causes bronchoconstriction.

Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
Neurons in the _______ of the hypothalamus have been implicated in the surge release of GnRH...
Neurons in the _______ of the hypothalamus have been implicated in the surge release of GnRH A) SON B) PVN C) MBH D) LHA E) MPOA Concerning GnRH, which one of the following statements is not true? a) it is a decapeptide b) its secretion always follow a bimodal pattern c) it triggers the release of LH and FSH from the anterior pituitary d) it triggers its effect at the anterior pituitary cells by binding to a G-protein coupled receptor...
The neurotransmitter of a majority of post-ganglionic sympathetic fibers is a. Dopamine b. Acetylcholine c. Glycine...
The neurotransmitter of a majority of post-ganglionic sympathetic fibers is a. Dopamine b. Acetylcholine c. Glycine d. Epinephrine e. all of the above f. none of the above
Q.The medullary cardiovascular center in the medulla: a. is activated by epinephrine and inhibited by acetylcholine...
Q.The medullary cardiovascular center in the medulla: a. is activated by epinephrine and inhibited by acetylcholine . b. is activated by the heart. c. activates the sympathetic nervous system and inhibits the parasympathetic nervous system. d. releases both epinephrine and acetylcholine. e. incrpPeases the heart rate by stimulating the parasympathetic nervous system. Q.How do arteries contribute to an increase in systemic blood pressure? a. Vasoconstriction of peripheral arteries reduces systemic arterial volume. b. Vasodilation of peripheral arteries increases systemic arterial...
____ tends to increase and then decrease over the life cycle. Select one: a. Income b....
____ tends to increase and then decrease over the life cycle. Select one: a. Income b. Retirement c. None of choices d. Emergency funds e. Both income abd emergency funds
what effects does inbreeding have on a population? A) inbreeding tends to decrease the effects of...
what effects does inbreeding have on a population? A) inbreeding tends to decrease the effects of sampling error in a population B) Inbreeding tends to increase the census population size C) inbreeding tends to increase the proportion of homozygous individuals in a population D) Inbreeding tends to decrease a population in susceptibility to disease
1. Symptoms of asthma include all of the following except A. coughing B. wheezing C. sneezing...
1. Symptoms of asthma include all of the following except A. coughing B. wheezing C. sneezing D. shortness of breath E. chest tightness 2._____may serve as a trigger for an asthma attack. A. Warm, moist air B. Fragrance-free products C. Crying or laughing D. All of the above 3.Treatment of COPD involves the administration of A. bronchodilators B. glucocorticosteroids C. antibiotics when infections are present D. oxygen E. All of the above 4. Which of the following drugs is not...
55. Vital capacity is a measure of: Select one: a. tidal volume. b. functional residual capacity....
55. Vital capacity is a measure of: Select one: a. tidal volume. b. functional residual capacity. c. inspiratory reserve volume + expiratory reserve volume d. total lung capcity minus tidal volume. e. inspiratory reserve volume + expiratory reserve volume + tidal volume
31. What is required in Endochondral Ossification? A. Hyaline Cartilage. B. Fibrous Connective tissue. C. Elastic...
31. What is required in Endochondral Ossification? A. Hyaline Cartilage. B. Fibrous Connective tissue. C. Elastic connective tissue. D. Dense irregular Connective Tissue. E. myofiber.    32. The refractory period is the time: A. between stimulation and the start of contraction. B. when the muscle is shortening. C. when the muscle is lengthening. D. following a stimulus during which a muscle cell cannot respond to another stimulus. E. it takes for acetylcholine to cross the synaptic cleft.   33. Fused...
There can be more than one correct answer! Thanks 11. What is the function of ACE?...
There can be more than one correct answer! Thanks 11. What is the function of ACE? A. stimulates the release of renin B. increases reabsorption of Na+ C. converts antiotensin I into angiotensin II D. increases reabsorption of H2O E. increases secretion of K+ ---------------------------- 12. Renin _____ A. increases Na+ reabsorption B. is released by JG cells when macula densa cells detect slower flow of NaCL thorough the distal convoluted tubule C. is released by JG cells when the...
Jamie lives in Colorado and it is winter. Since it is snowing and around the holidays,...
Jamie lives in Colorado and it is winter. Since it is snowing and around the holidays, she is spending more time inside and eating lots of desserts. Over the course of a month or so, she gains a significant amount of weight. 1. What effect does the weight gain have on her blood vessel flow rate? a) Blood vessels will have a greater flow rate and resistance will increase b) Blood vessels will have the same flow rate and resistance...