Exam 17: A: Sense Organs

Because of its importance to survival,the brain has a high concentration of pain receptors.

Proprioceptors respond to pressure in such organs as the intestine and the urinary bladder.

Olfactory receptors and taste buds are chemoreceptors.

Tonic proprioceptors allow us to know the location of our body parts without having to look.

Chemically,all photopigments in rods can be broken down into opsin and retinal.

Proprioceptors are receptors for touch,pain,heat,and cold.

The tip of the tongue reacts best to a salty taste and,to a lesser extent,to a sweet taste.

Each optic nerve contains fibers from both retinas.

Proprioceptors in muscles and joints tend to adapt faster than other types of receptors.

Otoliths are "ear stones" that are found in the matrix of the macula of the ear.

The retina is the complete outermost coat of the eyeball.

Somatic sense receptors located in muscles and joints are called visceroceptors.

As we wear our sneakers,we lose the constant feeling of their presence; this is called adaptation.

The transmission pathway for olfactory sensations is olfactory cilia,olfactory bulb,olfactory tract,and cerebral cortex.

In referring to proprioceptors,the terms tonic and phasic are interchangeable.

Nociceptors serve as the primary receptor for pain.

The tip of the tongue reacts best to bitter taste.

Lamellar corpuscle and Ruffini corpuscle refer to the same structure.

The tactile receptor is made up of two cells: a tactile epithelial cell and a tactile disk.

Proprioceptors are specialized types of visceroceptors.