When the individual is be unable to recognise everyday objects and name them correctly, this is known as

Correct Answer: C

Rationale: Agnosia is a neurological condition characterized by the inability to recognize or identify objects, people, sounds, or shapes, despite having intact sensory abilities. This condition arises from damage to specific areas of the brain responsible for processing sensory information. Agnosia can manifest in various forms, such as visual agnosia (inability to recognize objects) or auditory agnosia (inability to recognize sounds).

Correct Answer: D

Rationale: Interneurons, which are found within the CNS, typically have short dendrites and either a long or short axon. These neurons act as connectors between sensory and motor neurons, integrating and processing information to generate appropriate responses. The structure of interneurons allows them to facilitate communication within the CNS, enabling complex reflexes and higher-order cognitive functions.

Correct Answer: B

Rationale: As potassium ions move out of the axon during repolarization, the oscilloscope records a return of the membrane potential to its negative resting state. This phase of the action potential is called repolarization and is essential for resetting the neuron so it can fire another action potential. Repolarization ensures that the neuron is ready to transmit subsequent nerve impulses.

Correct Answer: D

Rationale: The synapse is the tiny gap between neurons or between a neuron and its target cell, such as a muscle. It is the site where neurotransmitters are released to transmit signals from one cell to another. When an action potential reaches the axon terminal, neurotransmitters are released into the synapse and bind to receptors on the postsynaptic cell, triggering a response. The synapse is crucial for communication within the nervous system.

Correct Answer: D

Rationale: Schwann cells are responsible for forming the myelin sheath around axons in the peripheral nervous system (PNS). Dendrites, cell bodies, nuclei, and nodes of Ranvier are not directly myelinated by Schwann cells. Therefore, D is the correct answer.