Concept explainers
Videos
Which of these is NOT a method by which sensory receptors receive information about the internal or external environment?
a. Changes in pressure
b. Light or heat changes
c. Changes in molecular concentration
d. All of these are used by sensory receptors.
Introduction:
The receptors, which provide information about the environment are known as sensory receptors. The two types of sensory receptors are exteroceptors and interoceptors. The exteroceptors are responsible for sensing the stimuli that arise in the external environment and the interoceptors are responsible for sensing the stimuli which arises within the body.
The exteroceptors and interoceptors are further divided as mechanoreceptors, chemoreceptors and electromagnetic receptors.
Answer to Problem 1U
Correct answer:
The sensory receptors are stimulated by pressure, heat, light and chemical changes in the environment. Therefore, option d. is correct.
Explanation of Solution
Reason for the correct statement:
The different types of sensory receptors are mechanoreceptors, chemoreceptors and electromagnetic receptors. The mechanoreceptors are stimulated by mechanical forces such as pressure, the chemoreceptors are stimulated by chemical changes, and the electromagnetic receptors are stimulated by heat and light.
Option d. is given as "all of these are used by sensory receptors".
As, “sensory receptors receive information from the changes in light, heat, pressure and molecular concentration”, is the right answer.
Hence, option d. is correct.
Reasons for the incorrect statements:
Option a. is given as “Changes in pressure”.
The changes in light, heat and molecular concentrations are also detected by the electromagnetic receptors and the chemoreceptors. So, it is a wrong answer.
Option b. is given as “Light or heat changes”
The changes in pressure and changes in molecular concentration are also detected by the type of sensory receptors, mechanoreceptors and the chemoreceptors. So, it is a wrong answer.
Option c. is given as “Changes in molecular concentration”.
The sensory receptors mechanoreceptors and electromagnetic receptors use the information from changes in pressure, light and heat. So, it is a wrong answer.
Hence, options a., b. and c. are incorrect.
The sensory receptors receive information about the internal and external environment by using the information from changes in light, heat, pressure and molecular concentration.
Want to see more full solutions like this?
Chapter 44 Solutions
Biology
- Knowing what you know about the anatomy of the eyeball, why do you suppose untreated glaucoma (excess aqueous humor production) causes blindness? Group of answer choices a. The excess aqueous humor compresses the optic nerve b. Intraocular pressure increases and the vitreous body presses against the lens c. The fluid accumulation causes the choroid to separate from the sclera d. The buildup of aqueous humor causes the vitreous body to press against the retina and disrupt its blood supply leading to cell death e. Aqueous humor is not reabsorbed as quickly as it is producedarrow_forwardThe receptors for sweet, bitter, and umami tastes all resemble which of these? A. Metabotropic synaptic receptors B. The rods in the retina C. The hair cells of the auditory system D. Endocrine glandsarrow_forwardThis image is of the very back of the eye. Light would be coming in from the left towards the right side. WHich label indicates the photo receptor rod and cone cells? A. middle layer, red and green B. rods and cones are not in this image, they are much closer to the front of the eye ball C. far right side, purple and yellow D. far left side, grayarrow_forward
- Which statement is FALSE? A. The basilar membrane fibers nearer the oval window are long and fluffy B. Sound signals are processed by the resonance of the basilar membrane before reaching the receptors C. Different frequencies of pressure waves in the cochlea cause specific places along the basilar membrane to vibrate, stimulating particular hair cells and sensory neurons. D. None of the choicesarrow_forwardthe nerves are a pair of cranial nerves involved in the sense of smell; these are only sensory and have no motor neurons. A. trigeminal B. vagus C. abducent D. olfactoryarrow_forwardThe transduction process of converting light into neural signals sent to the central nervous system involves which of these steps? A. Bipolar Cells collect signals from Rods and Cones. B. The Optic Nerve carries signals about light from the Lateral Geniculate Nuclues to the Retinal Ganglion Cells. C. Retinal Ganglion Cells relay information to Rods and Cones. D. Light that reaches the eyes passes first through the Retina which focuses that light onto the Cornea.arrow_forward
- If someone is born with dense cataracts on both eyes, and the cataracts are removed years later, what happens?A. The person remains permanently blind.B. The person gradually recovers all aspects of vision.C. The person gains some vision, but remains impaired on object recognition, motion vision, and depth perception.D. The person gains almost all aspects of vision, but remains greatly impaired on color perception.arrow_forwardWhich of the following statements explains why vision is less sharp in dim light than in bright light?a. Cones are more responsive in dim light.b. There are more rods than cones in the eye.c. Many rods converge on a single ganglion.d. The dilated pupil lets in more light than the lens can focus.arrow_forwardWhat function do the malleus, incus, and stapes bones in the inner ear play in processing sounds? A. The bones transform pressure waves into nerve impulses that the brain recognizes as sound. B. The bones equalize pressure between the middle ear and the atmosphere. C. The bones transmit vibrations to the oval window setting the fluid in the cochlea in motion. D. The bones depolarize or hyperpolarize hair cells depending on the direction they vibrate.arrow_forward
- Why is it easier to see images at night using peripheral, rather than the central, vision? a. Cones are denser in the periphery of the retina. b. Bipolar cells are denser in the periphery of the retina. c. Rods are denser in the periphery of the retina. d. The optic nerve exits at the periphery of the retina.arrow_forwardIf a person is born blind, what happens to the occipital (“visual”) cortex?A. Its cells shrink and gradually die.B. Its cells remain intact but forever inactive.C. Its cells become responsive to touch or hearing.D. Its cells become spontaneously active, producing hallucinations.arrow_forwardWhat is unusual about the olfactory receptors? a. Olfactory neurons have more than one axon. b. Humans do not begin forming olfactory neurons until nearly 2 years old. c. We continue forming new olfactory neurons throughout life. d. An unusually strong blood–brain barrier protects olfactory neurons from damage.arrow_forward
Human Anatomy & Physiology (11th Edition)BiologyISBN:9780134580999Author:Elaine N. Marieb, Katja N. HoehnPublisher:PEARSON
Biology 2eBiologyISBN:9781947172517Author:Matthew Douglas, Jung Choi, Mary Ann ClarkPublisher:OpenStax
Anatomy & PhysiologyBiologyISBN:9781259398629Author:McKinley, Michael P., O'loughlin, Valerie Dean, Bidle, Theresa StouterPublisher:Mcgraw Hill Education,
Molecular Biology of the Cell (Sixth Edition)BiologyISBN:9780815344322Author:Bruce Alberts, Alexander D. Johnson, Julian Lewis, David Morgan, Martin Raff, Keith Roberts, Peter WalterPublisher:W. W. Norton & Company
Laboratory Manual For Human Anatomy & PhysiologyBiologyISBN:9781260159363Author:Martin, Terry R., Prentice-craver, CynthiaPublisher:McGraw-Hill Publishing Co.
Inquiry Into Life (16th Edition)BiologyISBN:9781260231700Author:Sylvia S. Mader, Michael WindelspechtPublisher:McGraw Hill Education