Bio 126 Ch 11 The Nervous System: Integration and Control

Which of the following is not a function of the medulla?

Memory storage

Pick the incorrect association

Motor neuron: connects to sensory receptor

Which portion of a neuron releases the neurotransmitter?

Axon ending

What happens when acetylcholine binds to the postsynaptic membrane?

Receptor gates for sodium ions open up

Pick the true statement concerning the all-or-none aspect of nerve cell conduction

All action potentials have the same intensity

A person was involved in a car wreck. The occipital bone was fractured and the lobe behind it damaged.. What problem will this person most likely experience?

Blindness

Which is not a function of glial cells?

Control effector organs

Which is not part of the limbic system?

Corpus callosum

Choose the function that does not belong

Decreases breathing rate

What is the order of meninges starting at the skull?

Dura mater, arachnoid mater, pia mater

What is not a part of a neuron?

Glial body

A person had a stroke in an association area. Which problem will he or she most likely suffer from?

Inability to recognize a hot dog after looking at it

A person was born with an underdeveloped cerebellum. What problem will they most likely experience?

Inability to walk

What is the purpose of myelin?

Increase velocity of neural impulse conduction

Directly after repolarization, what is the charge and ion distribution?

Inside negative with more sodium ions and outside positive with potassium ions

Which is true of an ascending tract?

It sends sensory input to the brain

Which is true of the sympathetic nervous system?

It turns on during emergency situations

Describe the ion and charge distribution of the resting membrane potential (RMP)

Outside of the cell has more sodium ions and is more positive. Inside of the cell has more potassium ions and is more negative

The somatic nervous system (NS) is a direct subdivision of the __________

Peripheral NS

Repolarization is due to _________

Potassium ions exiting the neuron

What is the function of interneurons?

Receive sensory input and control motor output

What is the function of the thalamus?

Receives sensory information

A jellyroll-like structure on a neuron is observed in the electron microscope. What is being observed?

Schwann cells and an axon

What causes sodium to enter the cell once threshold is reached?

The sodium ion concentration gradient

Please put in the correct order the anatomy of a reflex arc involving your hand encountering a hot object.

Thermoreceptor dorsal root interneuron ventral root biceps brachii