Nervous system

Routers and filters information and responsible for the basic needs of life

Brain stem?

Repolarization of a neuron is described as

Bringing the membrane back to resting potential due to K+ ions moving out of the cell

Which ion causes neurotransmitter that circles to fuse with the axons membrane during the conduction of an impulse from one neuron to the next?

Calcium

Rebecca was running bases when she was hit in the back of the head with a softball. She found walking in maintaining her balance to be difficult. Which part of her brain was probably impacted due to being hit?

Cerebellum

A patient suffered a cerebral hemorrhage between the right frontal and the temporal lobe due to untreated high blood pressure. Which of the following are the likely signs and symptoms the patient may exhibit?

Confusion, inability to speak, loss of motor function within the hands and face

The large fiber tract that allows communication between the two hemispheres of the cerebrum.

Corpus callousm

The region of the spinal cord in which only sensory(afferent) nerve impulses are ascending toward the brain along myelinated fiber tracts is on the

Dorsal column

The cells responsible for moving around cerebrospinal fluid near the brain are called

Ependymal cells

Responsible for voluntary motor control, executive cognitive functions, memory and judgment

Frontal lobe

What statement best describes the resting state of a neuron?

Neurons are polarized with more sodium ions outside the cell and more potassium ions inside the cell.

Gaps or indentations between the myelin sheath that that's facilitate rapid conduction of nerve impulses are called

Nodes of Ranvier

Visual processing center that receives and interprets information from the eyes

Occipital lobe

What is the ability of the eye to focus on close objects?

accommodation

multiple sclerosis is an autoimmune disease in which the immune system attacks the proteins within the myelin sheaths around the central nervous system fibers. This causes myelin sheath to harden, resulting in loss of messages reaching the intended targets. What cell is the disease of multiple sclerosis?

Oligodenrocytes

Processes sensory information received from the body

Parietal lobe

When Brock walked out of the dark movie theater into the bright, midday sun he experienced

Photopuppillary reflex

The overlapping of the two visual fields that provides for depth perception (3-D vision) results in __________.

binocular vision

The midbrain, pons, and medulla oblongata are all part of the

brainstem

Which one of the following correctly lists the order of the parts through which light passes as it enters the eye?

cornea, aqueous humor, lens, vitreous humor

The biconvex structure that focuses light on the retina is the

lens

The brain and spinal cord are protected and cushioned by three connective tissue membranes that are collectively called

meninges

Impulse conduction is faster in neurons that are

myelinated

Support cells in the central nervous system are collectively called

neuroglia

Transmitting messages in the form of nerve impulses from one part of the body to another is the function of what cell?

neuron

What region of the retina lacks photoreceptor cells?

optic disc (blind spot)

Which of the following is the correct sequence in a typical reflex arc?

receptor, sensory neuron, integration center, motor neuron, effector

What type of photoreceptor cell allows us to see gray tones in dim light, and provides our peripheral vision?

rods

Which branch of the automatic nervous system mobilizes the body during Extreme situations such as rage

sympathetic division

The portion of the diencephalon that acts as a relay station for sensory impulses traveling to the sensory cortex is the ________.

thalamus

Controls temperature, endocrine activity, metabolism, and thirst are associated with this

Hypothalamus

Reflex arcs are rapid, predictable and

Involuntary

The emotional affective brain, involved in emotional recognition and response and memory formation.

Limbic system

All of the following are functions of the myelin sheath except

Lines cerebral cavities

rapid, predictable, and involuntary responses to stimuli that occurs over a neural pathway is called a

Reflex arcs

Which cell provides myelin sheath coverings to axons in the peripheral nervous system.

Schwann cells

The fibrous covering of the eye consist of the white outer layer known as the_______ and a transparent portion known as the_________

Sclera; cornea

What are the two main functional subdivisions within the peripheral nervous system?

Sensory and motor

All of the following are functions of the nervous system except

imagination

Which gland is located above the lateral end of each eye in releases tears?

lacrimal