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Match the communication method on the left with its property on the right.
To match: The communication method with its property.
Answer to Problem 1CC
Correct answer:
| (a) autocrine signal | 2. chemical |
| (b) cytokine | 2. chemical |
| (c) gap junction | 3. both electrical and chemical |
| (d) hormone | 2. chemical |
| (e) neurohormone | 2. chemical |
| (f) neurotransmitter | 2. chemical |
| (g) paracrine signal | 2. chemical |
Explanation of Solution
(a) Autocrine signal - 2. chemical communication
Autocrine signals are used for conducting communication between nearby or distant cells. In autocrine signaling, the cells secrete chemical units or hormones that are called autocrine agents. These agents bind to their respective receptors and pass on the required information.
(b) Cytokine - 2. chemical communication
Cytokine signals are mainly used for intracellular communications. Cytokine signaling is achieved by release of signaling proteins by the glial cells of the nervous system.
(c) Gap junction - 3. both electrical and chemical communication
Gap junctions are chemical as well as electrical signaling methods. They are majorly used for cell to cell communication. Chemical entities pass through gap junctions when they are open. Electrical signals can directly pass on from one cell to another through gap junctions.
(d) Hormone - 2. chemical communication
Hormones are chemical signaling molecules that are released by the endocrine glands in the body. Hormones bind to their respective receptors at the target site and produce the required physiological effect.
(e) Neurohormones - 2. Chemical communication
Like other hormones, neurohormones are also secreted by neurosecretory cells that act as endocrine glands. They are also released directly into the blood streams.
(f) Neurotransmitter - 2. Chemical
Neurotransmitters are the chemicals that are released between two neurons or between neuron to the target site for transmission of signals.
(g) Paracrine signal - 2. Chemical
Paracrine signals are those that are used for communication between two cells. Chemical entities are released and exchanged between the cells for the communication to take place.
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