Taste/Gustation 1. Diagram (labeled) and describe the organization and functiona

Question

Taste/Gustation 1. Diagram (labeled) and describe the organization and functional parts of the gustatory apparatus. 2. The papillae lined up in the back of the tongue are called . A. fungiform B. foliate C. circumvallate D. filliform 3. What are the five primary tastes? What is the basis of taste differentiation? 4. Which nerves carry taste information to the brain? Where is the "gustatory center" of the brain? Describe gustatory pathway step by step. 5. Sensory stimulation to the posterior 1/3 of the tongue is conducted by the A. hypoglossal nerve B. glossopharyngeal nerve C. vagus nerve D. trigeminal nerve

Explanation / Answer

2. Circumvallate (Vallate papillae) are V-shaped papillae which are found in front of the foramen cecum and sulcus terminalis and runs in the back of the tongue.

3. The 5 primary tastes are Sweet, Salty, Bitter, Sour & Savoury (known as Umami). Taste is a sensation produced when the receptors in the taste bud react & send a chemical signal to the brain. Different receptors send different signals to the brain which differentiates the taste,  

4.The Greater superficial petrosal branches of the facial nerve (cranial nerve VII), the lingual branch of the glossopharyngeal nerve (cranial nerve IX), and the superior laryngeal branch of the vagus nerve (Cranial nerve X) from the Gustatory nucleus carries the taste information to the brain.  

Taste Pathway

Taste Receptor --> Taste sensory neurons --> Gustatory Nucleus --> Hypothalamus

I--> Frontal Cortex

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