The Senses Flashcards
Which sense (general vs special) organs are widely distributed throughout the body?
General Sense Organs
Which sense organs (general vs special) exist as individual cells or receptors?
General Sense Organs
Which sense organs (general vs special) exist as highly complex organs?
Special Sense Organs
Which sense organs (general vs special) exist as groupings of specialized receptors?
Special Sense Organs
What receptors detect light?
Photoreceptors
What receptors detect chemicals?
Chemoreceptors
What receptors detect injury?
Pain receptors
What receptors detect temperature?
Thermoreceptors
What receptors detect movement?
Mechanoreceptors
What receptors detect position of body parts or changes in muscle length or tension?
Proprioceptors
A sense organ detects a stimulus, which is converted into a __________ which is then perceived as a ________ by the _________.
Nerve impulse, sensation, CNS
What are the 3 general sense receptors?
Skin receptors, Muscle Receptors, Deep Receptors
Where are Free Nerve Endings located and what do they detect?
Skin. Touch, pain, tickle, temperature
Where are the Tactile (Meissner) Corpuscles and what do they detect?
Skin. Fine touch and vibration
Where are the Bulbous (Ruffini) Corpuscles and what do they detect?
Skin. Touch and Pressure
Where are the Lamellar (Pacini) Corpuscles and what do they detect?
Skin. Pressure and vibration
Where are the Bulboid (Krause) Corpuscles and what do they detect?
Skin. Touch
Where are the Golgi Tendon receptors and what do they detect?
Muscle. Proprioception
Where are the Muscle Spindles and what do they detect?
Muscle. Proprioception
Where are the Stretch Receptors and what do they detect?
Deep within hollow Organs. Pressure.
Where are the Chemical Receptors and what do they detect?
Deep. detects pH, carbon dioxide, other chemicals
What part of the eye produces, distributes, and removes tears?
Lacrimal Apparatus
What is another name for the tear gland?
Lacrimal Gland
What does the Lacrimal Gland secrete?
Lysozyme, antibacterial enzyme
What is the pocket where palpebral conjuctiva and the ocular conjuctiva join
Fornix
What is the tough outer coat or “white” of the eye?
Sclera
What is the covering over the Sclera?
Cornea
How does the pupil dialate?
Contraction of iris muscle
What is the pigmented vascular layer of the eye that prevents scattering of light?
Choroid
What is the innermost layer of the eye, containing rods and cones?
Retina
What is the mucus membrane covering the front surface of the sclera and lining the eyelid
Conjunctiva
What is the transparent body of the pupil, focusing light rays on the retina?
Lens
Which layer of the eye contains the Cornea and Sclera?
The Fibrous layer
Which layer of the eye contains the Iris, Cilliary Body, and the Choroid?
The Vascular layer (uvea)
Which layer of the eye contains the Neural and pigmented part?
The Inner layer
The Aqueous humor is in the _____ cavity in the front of the lens
anterior
The Vitreous humor is in the _____ cavity in the front of the lens
posterior
Visual Disorders: ______ is often caused by elongation of the eyeball
Near sightedness or Myopia
Visual Disorders: ______ is often caused by a shortened the eyeball
Far sightedness or Hyperopia
Visual Disorders: ______ is distortion caused by an irregularity of the cornea or lens
Astigmatism
Visual Disorders: ______ are cloudy spots in the eye’s lens
Cataracts
What is improper alignment of the eyes?
Strabismus
What is inflammation of the conjunctivus? Interfering with refraction
Conjunctivitis
What is the clinical term for night blindness?
Nyctalopia
What is increased pressure in the retina?
Glaucoma
