Leaving Certificate The Nervous System, Eye and the Ear

Leaving Certificate The Nervous System, Eye and the Ear

Multiple Choice

The fluid found between the lens and the retina.

• Aqueous Humor

• Melanin

• Vitreous Humor

Multiple Choice

Neurons that detect light are called _______.

• Cones

• Rods

• Cornea

• Optic Nerve

Multiple Choice

Which part of the eye is #2?

• Pupil

• Retina

• Optic Nerve

• Lens

Multiple Choice

Which part of the eye is the place where images are inverted?  

• Retina
• Cornea
• Lens
• Iris

Multiple Choice

When you enter a dark room, what does the pupil do

• get larger
• get smaller

Multiple Choice

What part of the eye holds the lens in place?

• cornea
• ciliary muscles
• pupil
• retina

Multiple Choice

gel substance that gives the eye shape

• optic nerve

• iris

• vitreous humor

• retina

Multiple Choice

The white part of the eye made of a tough material

• lens

• sclera

• retina

• optic nerve

Multiple Choice

#3 Refers to the circular structure that surrounds the pupil and regulates the amount of light entering the eye.

• Cornea

• Pupil

• Retina

• Iris

Multiple Choice

#3 Refers to the circular structure that surrounds the pupil and regulates the amount of light entering the eye.

• Cornea

• Pupil

• Retina

• Iris

Nervous System

Know

• PNS & CNS

• 3 Neuron types - draw label and understand

• Synapse & Role of Neurotransmitters

• Transmission of Nerve impulse

• Reflex arc

• Brain parts and functions

Multiple Choice

Which of the following is NOT true of reflexes?

• They are automatic and do not require consciousness.

• Many, like the "pull away your hand" or "jerk your knee" reaction, originate in the spinal cord.

• Most occur before you even think about it.

• They originate in the brain and are voluntary.

• Many are evolved reactions meant to keep the body safe.

Multiple Choice

Which of the follow is the correct order of events in a reflex?

• Afferent system -> Efferent System -> Interneuron

• Efferent System -> Afferent system -> Interneuron

• Interneuron -> Afferent system -> Efferent System

• Afferent system -> Interneuron -> Efferent System

• Interneuron -> Efferent System -> Afferent system

Multiple Choice

True or false:

A reflex signal must travel to the brain before a response to the stimulus can occur.

• True

• False

Multiple Choice

_____________ is a group of organs and specialized cells that detect, process, and respond to information.

• The nerve system

• The Nervous system

• Endocrine system

• The brain

Multiple Choice

Branch-like extensions of the neuron that receive chemical messages and carry them to the cell body.

• Dendrites
• Neurons
• Nerves
• Spinal Cord

Multiple Choice

The part of the brain that controls conscious thoughts, senses, language  and memories.

• Cerebellum
• Cerebrum
• Dendrites
• Brain Stem

Multiple Choice

The part of the brain that controls balance, coordination, and unconscious muscle activities.

• Cerebrum
• Cerebellum
• Brain
• Spinal Cord

Multiple Choice

A bundle of nerves that runs along the back of a vertebrate within the spinal column.

• Dendrites
• Stimulus
• Brain Stem
• Spinal cord

Multiple Choice

During a relative refractory period:

•  the action potential cannot be initiated. 
• a resting potential exists.
•  the cell membrane is impermeable to Na+ and K+.
• the action potential can be initiated with a strong stimulus.

Multiple Choice

Compared with the outside of the neuron, the inside has a(n) ____ charge.

• positive
• negative 
• equal
•  None of the above are correct.

Multiple Choice

What is a neurotransmitter?

• fatty covering of the axon
• nerve cell
• chemical messenger
• gap between neurons

Multiple Choice

what are the two ions transported across the membrane in an action potential?

• O^2- and K⁺

• K⁺ and Na⁺

• Ca⁺² and B⁺³

• Na⁺¹ and Cl

Multiple Choice

The nervous system works together with the endocrine system to regulate and maintain what?

• A trusting, loving relationship
• Homeostasis
• Equality for all races
• Balanced hormone levels

Multiple Choice

If a neuron responds at all, it responds completely. This is known as the

• threshold
• all-or-none response
• neuronal pool
• withdrawal reflex

Multiple Choice

The gap that a message has to cross to get from one neuron to the other is called the _____

• synapse
• dendrite
• axon
• nucleus 

Multiple Choice

Which part of a neuron receives the messages

• Axon terminal

• Cell Body

• Dendrites

• Somatic Nervous Axon

Multiple Choice

Which neurons act to connect a sensory neuron to a motor neuron? 

• interneuron
• afferent 
• efferent
• motor

Multiple Choice

A chemical substance that transmits nerve impulses across a synapse 

• Neurotransmitter
• Axon
• Synapse
• Nerve

Multiple Choice

A chemical substance that transmits nerve impulses across a synapse 

• Neurotransmitter
• Axon
• Synapse
• Nerve

Multiple Choice

The critical point at which a stimulus causes an action potential

• Synapse
• Action potential
• Membrane potential
• Threshold

Multiple Choice

What part of the neuron is myelinated?

• Cell Body
• Axon
• Synapse
• Dendrite

Multiple Choice

What part of the neuron is myelinated?

• Cell Body
• Axon
• Synapse
• Dendrite

Multiple Choice

What part of the neuron is myelinated?

• Cell Body
• Axon
• Synapse
• Dendrite

Multiple Choice

What part of the neuron carries the impulse toward the nerve cell body?

• Dorsal Root
• Dendrites
• Myelin Sheath
• Axon

Multiple Choice

What is the change of a cell membrane from positive to negative called?

• Glycolysis
• Action Potential
• Temporal Summation
• Electrolysis

Multiple Choice

The nerve cell that transmits impulses from the brain or spinal cord to a muscle or gland.

• Motor Neuron
• Relay Neuron
• Sensory Neuron
• Schwann cell

Multiple Choice

The nerve cell that carries impulses from a sense receptor to the brain or spinal cord is a _____________.

• Motor Neuron
• Sensory Neuron
• Relay Neuron

Multiple Choice

The nerve cell that connects sensory and motor neurons is a _______________.

• Motor Neuron

• Sensory Neuron

• Interneurons

• Glial cells

Multiple Choice

What is the order of the path of light in the human eye?

• cornea, pupil, lens, retina, optic nerve, brain
•  lens,cornea, pupil, retina, optic nerve, brain
• pupil, lens, retina, optic nerve, cornea, brain
• brain, pupil, lens, retina, optic nerve, cornea,

Multiple Choice

For clear vision, an image must be focused exactly on the ________________.

• retina
• pupil
• optic nerve
• lens

Multiple Choice

Which part of the eye is a muscle that controls the opening and closing of the pupil?

• iris

• retina

• cornea

• optic nerve

Multiple Choice

Which behavior of light occurs as it passes through the cornea and the lens?

• absorption

• scattering

• reflection

• refraction

Multiple Choice

What is the ear drum?

• A thin piece of skin

• A thin Tendon

• A bone

• Part of the inner ear

Multiple Choice

What comprehend the neural signals

• Our Nerves

• The cochlea

• The ears

• Our brain

Multiple Choice

Hammer, Anvil, and stirrup are all called....

• Three bones

• Ossicles

• Ear bones

• Occulars

Multiple Choice

What else does our ears do besides help us to hear?

• Smell

• Balance

• Sight

• Fight off sickness

Multiple Choice

What is inside of the Cochlea?

• Liquid, and tiny hairs

• Water, and tiny hairs

• Acid, and hairs

• Water, and fuzz

Multiple Choice

What does the middle ear consist of?

• Ear canal,Ear drum

• Ear canal, ossicles

• Ear drum, Ossicles

• Ossicles, Cochlea

Multiple Choice

What happens in the eardrum?

• Sound waves vibrate the skin and delivers vibrations

• Sound waves make the tiny hairs in your ear move

• Carries the message to the brain

Multiple Choice

What part of the ear sends signals to the brain?

• optic nerve
• ear canal
• auditory nerve
• middle ear