Which of the following best describes a characteristic of nervous tissue?
A. Some of its cells send electrochemical messages.
B. Its intercellular space is filled with collagen.
C. It provides cushioning and protection from shearing forces.
D. It contracts to perform movements.
Answer (2)
The correct answer is option A, as nervous tissue is characterized by its ability to send electrochemical messages through neurons. The other options describe characteristics of connective or muscle tissues. Overall, nervous tissue plays a critical role in communication within the nervous system.
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The correct option that best describes a characteristic of nervous tissue is (A) Some of its cells send electrochemical messages.
Nervous tissue is a specialized tissue found in the nervous system, which includes the brain, spinal cord, and nerves. It is essential for coordinating and controlling many body activities. The main types of cells in nervous tissue are neurons and glial cells.
Neurons : These are the primary cells responsible for transmitting information throughout the body. Neurons communicate with each other through electrochemical signals. They consist of a cell body, dendrites, and an axon. The axon of a neuron transmits electrical impulses away from the cell body.
Glial Cells : These cells provide support and protection for neurons. They do not transmit signals but play important roles in maintaining the environment around neurons, providing nutrients, and removing waste products.
The ability to send electrochemical messages is crucial for the function of the nervous system. It allows the body to react to changes in the environment, process information, and execute complex functions such as movement, thought, and memory.
Options (B), (C), and (D) do not describe the functions of nervous tissue:
(B) The statement about intercellular space being filled with collagen is more characteristic of connective tissues, such as tendons and ligaments.
(C) Cushioning and protection from shearing forces are typical functions of connective tissues, like cartilage.
(D) The contraction to perform movements is a characteristic of muscle tissue, not nervous tissue.
Thus, option (A) is the best description of a key characteristic of nervous tissue.
