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64 Cards in this Set

  • Front
  • Back

What are the photo receptor cells in the retina called?

Rod's and cones.

Clear watery fluid in the anterior segment of the eye that provides nutrients for the lens and cornea is known as?

Aqueous humour.

Cells in the retina store a vitamin that is required for vision, what is it?

Vitamin A.

What is the condition called when there is a lack of all three cone types in the retina?

Colour blindness.

Located above the end of each eye and continually release tears onto the eyeball.

Lacrimal glands.

Clear outermost layer that creates the window through which light enters the eye.

Cornea.

Coloured part of the eye that has muscles that control the dilation of the pupil.

Iris.

Flexible biconcave disc that focuses light entering the eye onto the retina.

Lens.

Nerve impulses leaving the retina are transmitted along this to the optic cortex.

Optic nerve.

White outermost connective tissue that forms the outermost layer of the eyeball.

Sclera.

Name the parts of the external ear.

Pina, auditory canal, tympanic membrane.

The hair cells that function as hearing receptors are located where?

organ of courte.

How many small bones does the middle ear have to transmit vibrations to the middle ear?

Three.

Transmit vibratory motion of the eardrum to the fluids of the inner ear.

Auditory ossicles.

Runs downward to link the middle ear cavity with the throat.

Pharyngotympanic tube.

Equilibrium receptors of the inner ear that respond to head movements.

Vestibular apparatus.

Soundwaves entering the auditory canal hit this and cause it to vibrate.

Tympanic membrane.

Spiral shaped cavity in the bony labyrinth responsible for hearing.

Cochlea.

Location of dynamic equilibrium receptors that respond to angular or rotary movements of the head.

Semicircular canals.

Taste bud cells are often damaged and as a result are replaced. How often does this occur?

7 to 10 days.

Where in the oral cavity are the olfactory receptors located?

Roof of the nasal cavity

Olfactory receptor cells are responsible for what?

Sense of smell.

Taste and smell receptors are both what kind of receptors?

Chemoreceptors.

Name the four basic taste sensations?

Sweet, sour, salty and umami.

Where are the taste receptors found?

Papillae of the tongue.

The specific cells that respond to chemicals dissolved in the saliva that carry taste impulses are known as?

Gustatory cells.

Sensation of spinning and loss of balance.

Vertigo.

Hardening and clouding of the lens due to age and disease.

Cataract.

Inflammation of the middle ear.

Otitis media.

Loss of smell and taste.

Anosmia.

The term central nervous system refers to the?

Brain and spinal cord.

The functional junction between neurons that allows transmission of nerve impulses is the?

Synaptic cleft.

The neuron processes that normally receive incoming stimuli are called?

Dendrites.

A neuron with a cell body located in the central nervous system whose primary function is connecting other neurons is called a?

Association neuron.

Impulse conduction is fastest in neurons that are?

Myelinated.

An action potential is?

A nerve impulse transition.

The substance that is released to allow a nerve impulse to cross the synaptic gap is called?

Neurotransmitter.

The part of the neuron that is damaged with multiple sclerosis causing a disruption in nerve transmissions is?

Myelin sheath.

What is the hypothalamus responsible for?

Regulating temperature.

What is the watery fluid called that protects the brain and spinal cord?

Cerebral fluid.

Neurons that carry impulses from the sensory receptors to the central nervous system are?

Sensory/afferent neurons.

The defence system that protects the brain from chemical changes affecting the body?

Blood brain barrier.

Speech, memory, emotion and voluntary movement are all functions of the?

Cerebral cortex.

POTASSIUM IONS - SODIUM IONS - DEPOLARIZATION - REPOLARIZATION - GRADED POTENTIAL


_____ diffuse rapidly into the cell and this changes the polarity of the cell in a process called_____. The inside is now more positive and the outside is more negative, a situation called a _____, and called a nerve impulse in neurons. _____ diffuse out of the cell restoring the conditions at the membrane to the polarized, or resting state. This process is called _____ and until this occurs a neuron cannot conduct another impulse.

Sodium ions


Depolarization


Graded potential


Potassium ions


Repolarization.

Dilates the bronchioles.

Sympathetic nervous system.

Increases the heart rate.

Sympathetic nervous system.

Stimulates skeletal muscle movement.

Somatic nervous system.

Constricts the pupil.

Parasympathetic nervous system.

Decreases the heart rate.

Parasympathetic nervous system.

Increases smooth muscle mobility in the digestive system.

Parasympathetic nervous system.

Most hormone concentration in the blood is regulated by?

The thyroid.

Hypothyroidism occurring in adults results in which condition?

Graves disease.

What is the tropic hormones role?

To stimulate their target organ.

Insulin has a _______ effect.

Hypoglyceamic.

What hormones does the thyroid gland secrete?

(T3) triiodothyronine, (T4) Thyroxine.

The two most important hormones for maintaining fluid and electrolyte balance are?

Anti diuretic hormone, aldosterone.

The hormones released by the anterior pituitary gland are?

Growth hormone GH,


prolactin PRL,


follicle stimulating hormone FSH,


lutenizing hormone LH,


thyroid stimulating hormone TSH, adrenocorticotropic hormone ACTH.

Antidiuretic hormone ADH also increases blood pressure by constricting arterioles and for this reason is often referred to as vasopressin.


TRUE/FALSE

TRUE

What do Gonadotropic hormones regulate?

Follicle stimulating hormone FSH


Lutenizing hormone LH

Parathyroid hormone produced by the adrenal medulla are collectively known as catecholimines?


TRUE/FALSE

TRUE

The mechanism where changing blood levels of certain ions and nutrients stimulate hormone release is referred to as what?

Negative feedback.

Gland that produces thymosin.


Gland that produces testosterone.


Gland that produces melatonin.


Glands that produce steroids and adrenaline.


Producer of hormones released by the posterior pituitary gland.


F - thymus gland
J - testes
A - pineal gland/body
G - adrenal gland
B - hypothalymus

Gland that produces insulin and glucagon.


Glands that act as antagonists to the thyroid gland hormone.


Gland that has both glandular and nervous tissue.


Gland that is a major producer of female hormones.


Gland that is primarily responsible for body metabolism.

H - pancreas
E - parathyroid gland
C - anterior pituitory
I - ovaries
D - thyroid gland

Grey matter.


White matter.

The centre area of the central nervous system that contains cell bodies, their axons and their dendrites.


The outer layer of the central nervous system that contains only myelin coated axons.