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Biology: The Unity and Diversity o...

15th Edition
Cecie Starr + 3 others
ISBN: 9781337408332

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BuyFindarrow_forward

Biology: The Unity and Diversity o...

15th Edition
Cecie Starr + 3 others
ISBN: 9781337408332
Textbook Problem
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______ in arteries sense changes in the acidity of the blood.

  1. a. Mechanoreceptors
  2. b. Neurotransmitters
  3. c. Photoreceptors
  4. d. Chemoreceptors

Summary Introduction

Concept introduction: Chemoreceptors or chemosensors are specialized sensory cells that respond to a chemical substance and generate a biological signal. The signal is in the form of an action potential if the chemoreceptor is neuron. And the signal may be in the form of a neurotransmitter that activates a nearby nerve fiber if the chemosensor is a specialized sensory receptor cell such as taste receptor in a taste bud.

Explanation

Reasons for correct answer:

The breathing patterns change with the activity levels. When the active muscle cells produce additional CO2 that enters the blood, it combines with water to form carbonic acid. The chemoreceptors in the walls of carotid arteries and the aorta detect the acidity rise and signal the brain.

Option d. is given as “Chemoreceptors”. As the chemoreceptors in arteries sense change in the acidity of the blood option d. is correct.

Reasons for incorrect answers:

Option a. is given as “Mechanoreceptors”...

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