NCERT Class 11 Science — Chapter 8: Neural Control and Coordination

Which of the following is the outermost meningeal layer covering the human brain?

The neurosecretory cells present in the hypothalamus secrete hormones known as:

Consider the following statements about synapses: 1. Electrical synapses transmit faster than chemical synapses. 2. Chemical synapses have closely apposed membranes with no cleft. 3. Electrical synapses are rare in humans. Which of the statements given above are correct?

The structural and functional unit of the neural system is the:

Myelinated nerve fibres in the peripheral nervous system are enveloped by which of the following cell types?

The hypothalamus contains centres that regulate which of the following?

In a resting neuron, the axonal membrane is comparatively more permeable to:

The neural system of Hydra is characterised by:

Which combination correctly represents the action of the sodium-potassium pump in neurons?

The dorsal portion of the midbrain consists mainly of four round swellings called:

With reference to coordination in the human body, consider the following statements: 1. Neural pathways enable rapid point-to-point signalling. 2. Hormones provide electrical integration across organs. 3. Both systems jointly ensure synchronised organ function. Which of the statements given above are correct?

The membranes covering the brain inside the skull are collectively called cranial meninges. Which is the correct sequence from outermost to innermost?

The autonomic neural system is further subdivided into which of the following?

Which neuron type is characteristically present in the retina of the eye?

Consider the following regarding the divisions of the human neural system: 1. Central neural system includes only the brain. 2. Peripheral neural system comprises all nerves associated with the CNS. 3. Central neural system is the primary site for information processing and control. Which of the statements given above are correct?

Which of the following correctly lists the three major parts into which the human brain can be divided?

Assertion (A): Impulse transmission across an electrical synapse is very similar to impulse conduction along a single axon. Reason (R): At electrical synapses, the membranes of the pre- and post-synaptic neurons are in very close proximity, allowing current to flow directly.

Consider the following statements: 1. The cerebral cortex contains only motor areas. 2. Association areas are responsible for intersensory associations, memory and communication. 3. Sensory areas are present in the cortex. Which of the statements given above are correct?

Assertion (A): In a resting neuron, the axonal membrane is positively charged outside and negatively charged inside. Reason (R): The sodium-potassium pump transports 3 Na+ into the cell for every 2 K+ transported out.

The somatic neural system relays impulses from the CNS to:

In the cell body of a neuron, the granular bodies involved in protein synthesis are known as which of the following?

What is the bulb-like distal structure at the end of an axon called?

What are the gaps between adjacent segments of the myelin sheath along a nerve fibre called?

The thalamus serves as a major coordinating centre for:

The inner part of the cerebral hemisphere, which appears white due to myelinated axons, is called:

The limbic system of the brain is primarily involved in regulating which of the following?

Consider the following statements about the cerebral hemispheres: 1. They are connected by the cerebellum. 2. They are separated by a deep longitudinal cleft. 3. The outer layer is smooth and lacks folds. Which of the statements given above is/are correct?