Question

Which of the following correctly lists the structures through which tactile stimuli travel after being converted into neural signals? A. spinal cord, somatosensory cortex, thalamus B. somatosensory cortex, thalamus, spinal cord C. thalamus, spinal cord, somatosensory cortex D. spinal cord, thalamus, somatosensory cortex

Answer 1

Answer: D. spinal cord, thalamus, somatosensory cortex.

Step-by-step explanation:

The tactile stimulation can be define as the process of interpretation of the tactile stimuli by the body and providing a response to it. The tactile stimulus includes the texture, touch sensations, and temperature. This is sensed by the receptors beneath the skin.

The tactile stimuli is converted into neural signals by the aid of sensory receptors present in the skin. The sensory nerves carry the signals to the spinal cord.

These signals are pass on to the thalamus for processing. From the thalamus the signals are passed on to the somatosensory cortex residing in the parietal lobe. The brain then determines the place where the body was touched.

Answer 2

The right answer is D. spinal cord, thalamus, somatosensory cortex.

To summarize, sensations are sensed by sensory receptors. These sensations are transmitted by the axon of the receiver to the spinal cord or a cerebral nucleus, before reaching the thalamus. After the relay in the thalamus, the sensations are transmitted to the sensory cortex, which processes this information. Only the sense of smell goes against the thalamus and reaches the brain directly.