2. What is the purpose of teeth? a. increase food's surface area b. decrease food's surface area c. increase food's volume d. decrease food's volume 3. One of the functions of the tongue is to: a. increase food's surface area b. position the bolus so that it can be swallowed c. separate the respiratory system from the digestive system d. allows for eating and breathing at the same time 4. When you cough up food, from what systems of the body does it come from and go to? a. digestive to respiratory b. digestive to urinary c. respiratory to digestive d. respiratory to urinary 5. What two (2) respiratory system organs sit on top of the esophagus? a. larynx b. laryngopharynx c. oropharynx d. trachea e. lungs f. nasal sinuses
Anatomy and Physiology of Special Sensory Organs
Sensory organs can be labeled as special sensory structures that permit sight, hearing, odor, and flavor. Sensory structures permitting proprioception, touch, thermal, and pain perception can be classified as more advanced sensory organs. The sensory neurons are trained to find out modifications in the external and internal conditions so that a person's body can react to that change. A stimulus is the first signal that is recognized by any sensory receptor of the body. Stimulus is an impulse generated when there is a change in the surroundings of a person. For example, a heated environment will alert the brain through the thermal sensory organs and generate a reflex accordingly.
Sensory Receptors
The human sensory system is one of the most complex and highly evolved structures, which processes a myriad of incoming messages. This well-coordinated system helps an organism or individual to respond to external stimuli, appropriately. The sensory receptors are an important part of the sensory system. These receptors are specialized epidermal cells that respond to external environmental stimuli. These receptors consist of structural and support cells that form the peripheral unit of the receptor and the neural dendrites which receive and detect the external stimuli.
Introduction
The digestive system is the group of organs responsible for the ingestion, breakdown, and absorption of food, as well as the elimination of waste products from the body.
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