Nervous System (Senses) What types of sensory receptors are there?

Nervous System (Senses) What are the types of cutaneous sense organs?

Nervous System (Senses) What is the network-like pattern on fish and tadpoles? ___________ have sensitive _____ with __________ extending into a cavity, fluid or a __________ Organized into mechano- or electroreceptive structures Pattern refered to as a …

Nervous System (Senses) The Senses: Balance __________________ Responds to movement of endolymph (fluid) in semicircular canals i.e. angular (rotational) acceleration

Nervous System (Senses) The Senses: Balance ______________ Responds to force of gravity and linear acceleration

Nervous System (Senses) The Senses: Hearing ________ collects sound waves _____________________(canal) channels sound waves ____________. & ___________ conduct sound waves

Nervous System (Senses) The Senses: Hearing The ______________transfers sound waves to the liquid inside the _______ Three _____:

Nervous System (Senses) The Senses: Hearing Sound waves vibrate _______ _____ causing microvilli to bend Bending causes depolarization in hair cells that in turn create action potentials in synapsing neurons

Nervous System (Senses) The Senses: Hearing Basilar membrane stiff near vestibule, responds to higher frequency sounds (_______ Hz). Lower pitches picked up further in to cochlear duct, with lowest frequencies (___ Hz) at apex Excess wave energy travels back down via …

Nervous System (Senses) The Special Senses: Olfaction (smell)

Nervous System (Senses) The Special Senses: Gustation (taste) Chemoreceptors that detect chemicals which are ________(saliva) are taste buds. Taste buds are comprised of specialized epithelial cells that synapse with neurons. Associated mainly with _________. Also on lips etc.

Nervous System (Senses) The Senses: Gustation (taste) Types of papillae: (most numerous but NO taste buds here. Foliate papillae

Nervous System (Senses) The Senses: Gustation (taste) Salty

Nervous System (Senses) What are the layers of the eye and what are their functions? 3 distinct layers of tissue in eye: ___________ Sclera & cornea ___________ Choroid, iris etc. ___________ Retina Clear light pathway

Nervous System (Senses) What is the external anatomy of the eye?

Nervous System (Senses) What is the internal anatomy of the eye?

Nervous System (Senses) How do our eyes control the amount of light entering? _________ refracts light as it head towards lens ______ is attached to ciliary body and consists of contractile tissue (smooth muscle). Coloration is due to varying amounts of melanin _____ is simply the hole in the center of the iris

Nervous System (Senses) How do we focus the image? __________contains smooth muscle fibers, which allow the distortion of the lens via _________________. ______________are very vascular and produce ______________(watery fluid in anterior compartment).

Nervous System (Senses) How is light converted into action potentials? 3 neuronal layers of the retina: ________________ Also ___________and ___________________

Nervous System (Senses) Are all photoreceptors created equally? _____(~120 million each) ________ (~6-7 million each)

Nervous System (Senses) How is light converted into action potentials? The Senses: Vision Photoreceptors are rather unique in that they are ______________ as a result of stimulation. In dark (no stimulus) leaky Na+ channels. In light (stimulus) Na+ channels close and hyperpolarization occurs