The correct option is (c).
Explanation
Nervous tissue is the primary component of the nervous system, consisting of neurons (nerve cells) and supporting cells. It is responsible for sensing stimuli and transmitting signals to coordinate bodily functions.
Statement-wise Analysis:
- Statement 1 is Correct: Nervous tissue is highly specialized for excitability and conductivity. It receives stimuli and transmits electrochemical signals (impulses) rapidly from one part of the body to another to facilitate quick responses.
- Statement 2 is Incorrect: While the cell body of a neuron is microscopic, the axon (the projection that carries impulses) can be very long. Some nerve cells in the human body can be up to a meter in length (e.g., neurons extending from the spinal cord to the toes). Therefore, they are not limited to a few millimeters.
- Statement 3 is Correct: The functional integration of nerve and muscle tissue is fundamental to animal physiology. Nerve impulses trigger muscle contraction, enabling animals to perform voluntary and involuntary movements in response to stimuli.
Key Takeaway:
Neurons are specialized for rapid signal transmission and are structurally unique; unlike most cells, they can be exceptionally long (up to a meter) to connect distant parts of the body.