BIOS 252 Exam 3 - –Answer Myelinated, Large 2. The finger-like ...

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BIOS 252 Exam 3

• A with a Diameter carries electrical impulses the fastest

–Answer Myelinated, Large

• The finger-like projections extending from the neuron's cell body that are most frequently

the site of stimulation and formation of graded potentials are called –Answer Dendrites

• Sense

When a stimulus activates its specific sensory receptor. Perceive The process of your brain interpreting all the stimuli at a given time Receptors can either Adapt fast or slowly. If they do so quickly, they are called Tonic receptors, if they do so slowly, they are called Phasic receptors.–Answer

• general senses include

–Answer (Consciously ) Consciously perceived –Answer

Touch Pressure Stretch Heat Cold pain –Answer Consciously perceived –Answer

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Touch Pressure Stretch Heat Cold pain

• general senses (unconscious)

–Answer Blood Pressure Blood composition Stretching of viscera Oxygen pH

• 5 special senses

–Answer Olfaction (smell) Gustatory (Taste) Sight

Auditory (hear) Equilibrium (Balance)

• Exteroceptors =

–Answer primarily sense stimuli that are coming from the outside. Your special senses of sight, smell and hearing along with the general somatic senses associated with touch.Receptors that receive outside stimulus

• Interoceptor=-

–Answer monitor and maintain the homeostatic balance of your body as well as check for stretching, pressure and damage to internal organs.receptors located inside, along organs

• Proprioceptor=

–Answer The prefix "Proprio" means self or one's own. It is aptly named since proprioceptors will communicate to your brain how the body is positioned. 2 / 4

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where are you? receptors in muscles, tendons, and joints

• Exteroceptors

receptors sense information coming from the outside.Interoceptor sense information originating from the inside while Proprioceptor receptors sense information about body position.–Answer

• Mechanoreceptors (Senses mechanical changes)

Osmoreceptors (Senses body fluid osmolarity) Thermoreceptors (Sense Changes in temperature) Chemoreceptors (Sense Chemicals) Photoreceptors (Senses light) Nociceptors (Senses Pain) –Answer

• Mechanoreceptors

–Answer Mechanoreceptors sense anything that has to do with tactile sensations. Tactile sensations have many sensory modalities including –Answer

Touch Pressure Itch Tickle Vibrations Stretching Proprioception

• chemoreceptors

–Answer chemical sensors in the brain and blood vessels that identify changing levels of oxygen and carbon dioxide

• nocireceptors

–Answer pain receptors

• Mechanoreceptors

–Answer 3 / 4

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respond to touch, pressure, vibration, stretch, and itch

• Photoreceptors

–Answer respond to light (rods and cones)

• osmoreceptor

–Answer A sensory receptor that detects changes in water potential

• thermoreceptor

–Answer A receptor that responds to changes in temperature.

• To is when a stimulus successfully stimulates an action poten- tial in its

specific neuron. How your brain interprets the message is how the stimulus is .–Answer sense; perceived

• Any senses categorized as special senses have this in common ;
• They are all exteroceptors
• They are the only receptor types located in the head.
• They all use a type of chemical receptor to sense stimuli
• All their sensory neurons have specialty cells used for sensing

–Answer a

• are the fast adapting type of sensory receptors. They sense a stimuli and

then shutdown very quickly. are the slowly adapting receptors.–Answer tonic; phasic

• The process in which a sensory structure is stimulated and creates a graded potential in a

neuron is called –Answer

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