AP PSYCHOLOGY

Detailed explanation-1: -The impulse travels along a sensory nerve to the spinal cord. The impulse crosses a synapse (the junction between two nerve cells) between the sensory nerve and a nerve cell in the spinal cord. The impulse crosses from the nerve cell in the spinal cord to the opposite side of the spinal cord.

Detailed explanation-2: -So, the correct answer is ‘Dendrite → cell body → axon’.

Detailed explanation-3: -Neural pathways are groups of nerve fibers which carry information between the various parts of the CNS. Neural pathways that connect the CNS and spinal cord are called tracts. Ascending tracts run from the spinal cord to the brain while descending tracts run from the brain to the spinal cord.

Detailed explanation-4: -The nerve pathway followed by a reflex action is called a reflex arc . For example, a simple reflex arc happens if we accidentally touch something hot. Receptor in the skin detects a stimulus (the change in temperature). Sensory neurones send electrical impulses to relay neurones, which are located in the spinal cord.