Radula: Feeding Mechanism in Mollusks
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Questions and Answers

What is the function of the radula?

  • Sensation
  • Feeding (correct)
  • Reproduction
  • Respiration
  • What are the 'teeth' on the radula made of?

  • Enamel
  • Bone
  • Chitin (correct)
  • Cartilage
  • Which type of signaling molecule travels over short distances by diffusion and helps regulate blood pressure, nervous system function, and reproduction?

  • Neurohormones
  • Hormones
  • Local regulators (correct)
  • Neurotransmitters
  • How does the food mix with liquids for digestion after being broken off by the radula?

    <p>In the digestive system</p> Signup and view all the answers

    In which type of signaling do non-hormonal chemical signals called local regulators elicit responses in nearby target cells?

    <p>Paracrine signaling</p> Signup and view all the answers

    Which system is a slower responding system that influences all cells by means of hormones?

    <p>Endocrine system</p> Signup and view all the answers

    What type of cell communications involve pores in the cell membrane that allow signaling chemicals to move from cell to cell?

    <p>Gap junctions</p> Signup and view all the answers

    Which part of the pituitary gland stores and secretes two hormones that were synthesized in the hypothalamus: oxytocin and ADH?

    <p>Posterior Pituitary</p> Signup and view all the answers

    Which system influences all cells by means of hormones and is slower responding?

    <p>Endocrine system</p> Signup and view all the answers

    What type of cell communications involve pores in the cell membrane that allow signaling chemicals to move from cell to cell?

    <p>Gap junctions</p> Signup and view all the answers

    Which part of the pituitary gland secretes hormones like ACTH, TSH, LH, FSH, GH, and Prolactin?

    <p>Anterior Pituitary</p> Signup and view all the answers

    What are the types of secreted signaling molecules mentioned in the text?

    <p>Hormones, Local regulators, Neurotransmitters, Neurohormones, Pheromones</p> Signup and view all the answers

    What type of signaling molecule travels over short distances by diffusion and helps regulate blood pressure, nervous system function, and reproduction?

    <p>Local regulators</p> Signup and view all the answers

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