Exam 3 - BIOS252 BIOS 252

Exam 3 - BIOS252 / BIOS 252

(ACTUAL / ) :

Anatomy And Physiology II With Lab - Chamberlain

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What makes up the vascular tunic? - <<<>>>choroid, ciliary body, iris

What is the choroid? -<<<>>>black pigmented network of blood vessels used to nourish the eye

What is the ciliary body? -<<<>>>The ciliary body is an anterior thickening of the middle layer containing muscles which control the shape of the lens, movement of the iris and serves as a point of attachment for suspensory ligaments of the lens.

What are the three parts of the ciliary body? - <<<>>>ciliary muscles, ciliary processes, ciliary zonule Corpuscles for touch -<<<>>>Sensory receptors for light touch and low frequency vibration

Merkel cells -<<<>>>Sensory receptors for pressure

Ruffini's corpuscle -<<<>>>Sensory receptors for light and deep pressure

Pacinian corpuscle -<<<>>>Sensory receptors for vibration 2 / 3

Complex Tactile Sensations -<<<>>>Combination of various nerve endings, giving surfaces textures

What are the parts of the fibrous tunic of the eye? - <<<>>>sclera and cornea

What is the sclera of the eye? -<<<>>>white of the eye, where eye muscles attach

What is the cornea? -<<<>>>Outer transparent layer, bends/refracts light into the eyeWhat is Foliate papillae? -<<<>>>located on lateral aspects of posterior tongue

What is Filiform papillae? -<<<>>>gives tongue roughness to provide friction; only one that does not contain taste buds; gives tongue a whitish appearance

Where do the gustatory receptor cells send their signal to? - <<<>>>Facial nerve ( anterior 2/3 of the tongue) Glossopharyngeal (posterior 1/3 of the tongue and pharynx) Vagus nerve (epiglottis)

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