Endocrine vs Nervous System Quiz
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Questions and Answers

What is a primary difference between the endocrine system and the nervous system in terms of signal transmission speed?

  • Nervous signals are generally slower than endocrine signals.
  • Endocrine signals are instantaneous while nervous signals take time.
  • Both systems transmit signals at the same speed.
  • Endocrine signals are generally slower than nervous signals. (correct)

    • Which type of cell bridges the functions of both the nervous and endocrine systems?

  • Endocrine cell
  • Glial cell
  • Neuroendocrine cell (correct)
  • Neurotransmitter cell

    • How do steroid hormones typically influence target cells?

  • By binding to receptors inside the cells and altering gene expression. (correct)
  • By temporarily blocking receptor sites on cell membranes.
  • By activating existing proteins without changing gene expression.
  • By immediately stimulating nerve impulses in adjacent cells.

    • Which of the following accurately represents the difference between negative and positive feedback in biological systems?

    <p>Negative feedback restores a preexisting state, whereas positive feedback enhances the direction of change.</p> Signup and view all the answers

    What role do insulin and glucagon play in glucose homeostasis?

    <p>Insulin lowers blood glucose levels, while glucagon raises them.</p> Signup and view all the answers

    Which statement correctly differentiates between the mechanisms by which peptide hormones and steroid hormones affect target cells?

    <p>Peptide hormones initiate a signaling cascade through second messengers, whereas steroid hormones interact directly with DNA.</p> Signup and view all the answers

    What is the primary function of the hypothalamus and pituitary gland in neuroendocrine signaling?

    <p>They act as a control center coordinating hormonal activity and maintaining homeostasis.</p> Signup and view all the answers

    In terms of thermoregulation, how do endotherms differ from ectotherms?

    <p>Endotherms maintain a constant body temperature regardless of external conditions, while ectotherms' body temperature varies with their environment.</p> Signup and view all the answers

    How does negative feedback in biological systems differ from positive feedback?

    <p>Negative feedback restores systems to a preexisting state, whereas positive feedback creates a new state.</p> Signup and view all the answers

    What distinguishes animal regulators from conformers in thermoregulation?

    <p>Regulators maintain a constant internal environment regardless of external conditions, while conformers adjust their internal state according to the environment.</p> Signup and view all the answers

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