Olfactory Receptors and Odor Detection
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Questions and Answers

What is the outer layer of the eye called?

  • Conjunctiva
  • Sclera
  • Cornea (correct)
  • Choroid coat
  • Which muscle is attached to the upper and lower eyelids?

  • Levator palpebrae superioris (correct)
  • Orbicularis oculi
  • Superior rectus
  • Inferior oblique
  • What is the function of the lacrimal gland?

  • Supporting vision
  • Maintaining eye shape
  • Controlling eye movement
  • Producing tears (correct)
  • What is the deepest layer of the eye called?

    <p>Inner tunic</p> Signup and view all the answers

    Which part of the eye is primarily composed of connective tissue?

    <p>Cornea</p> Signup and view all the answers

    Which of the following is NOT one of the extrinsic muscles attached to the bones of the orbit?

    <p>Optic nerve</p> Signup and view all the answers

    Which of the following is NOT one of the traditional senses mentioned in the text?

    <p>Balance</p> Signup and view all the answers

    Where is sensory information regarding smell sent directly to?

    <p>Olfactory bulb</p> Signup and view all the answers

    To which part of the brain does the thalamus pass most sensory signals for processing?

    <p>Cerebral cortex</p> Signup and view all the answers

    Which system is responsible for the sense of touch according to the text?

    <p>Integumentary and nervous systems</p> Signup and view all the answers

    How many different traditional senses are mentioned in the text?

    <p>Five</p> Signup and view all the answers

    Where does sensory information from sensing organs relayed to different parts of the brain pass through?

    <p>Various pathways</p> Signup and view all the answers

    What is the function of the eyelids in protecting the eye?

    <p>To trap debris that enters the eye</p> Signup and view all the answers

    Which muscle opens the eyelid?

    <p>Levator palpebrae superioris</p> Signup and view all the answers

    What is the visible part of the ear known as?

    <p>Auricle</p> Signup and view all the answers

    What is the function of the eustachian tube in the middle ear?

    <p>To equalize pressure in the ear</p> Signup and view all the answers

    What is the structure that leads sound waves from the auricle to the middle ear?

    <p>External auditory canal</p> Signup and view all the answers

    What is the role of small hairs and ceruminous glands in the external auditory canal?

    <p>To protect the ear from debris</p> Signup and view all the answers

    What is the main composition of the cell membrane?

    <p>Lipids and proteins</p> Signup and view all the answers

    What will happen if there is extensive damage to the cell membrane?

    <p>The contents of the cell will leak out</p> Signup and view all the answers

    In which part of the cell do all living substances, except for the nucleus, reside?

    <p>Cytoplasm</p> Signup and view all the answers

    What does the word 'metabolism' refer to in relation to cells?

    <p>Activity in the cytoplasm</p> Signup and view all the answers

    Which organelle contains enzymes for breaking down proteins, carbohydrates, acids, and foreign substances entering the cell?

    <p>Lysosomes</p> Signup and view all the answers

    What does the cell membrane do to protect the cell from tiny breaks?

    <p>Seals them whenever they occur</p> Signup and view all the answers

    Why is it often difficult to detect some odors?

    <p>Because olfactory receptors are located very high in the nasal cavity.</p> Signup and view all the answers

    What happens to approximately 50 percent of the intensity of an odor within the first second following stimulation?

    <p>It is lost.</p> Signup and view all the answers

    Which part of the nervous system is always in direct contact with the environment?

    <p>The olfactory system.</p> Signup and view all the answers

    What can happen if damage occurs to the olfactory neurons?

    <p>Sense of smell decreases.</p> Signup and view all the answers

    Which sensory organs on the tongue are responsible for detecting chemicals in food?

    <p>Taste receptors.</p> Signup and view all the answers

    How many basic tastes do taste buds relay to the brain?

    <p>Five</p> Signup and view all the answers

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