NERVOUS SYSTEM

Which statement best describes a Leak ion channels?

• open in response to changes in the membrane potential.

• are always open.

• open in response to neurotransmitters or other chemicals.

• are closed until opened by specific signals.

Sophia is taking her Anatomy and Physiology test. An EEG of her brain would most likely show a higher frequency of which of the following wave types?

• Alpha waves

• Beta waves

• Delta waves

• Theta waves

If you are experiencing extreme frustration, your brain is more likely to exhibit which type of wave pattern?

• Alpha waves

• Beta waves

• Delta waves

• Theta waves

• Gamma waves

The type of memory that is involved with the retaining of facts such as names or dates as well as associated emotional undertones is called ________ memory.

• short-term

• declarative

• procedural

• implicit

• working

In a neuron, short, branching cytoplasmic extensions that receive information and carry it to the cell body are called ________.

• dendrites

• axons

• cell bodies

• axon hillock

• a myelin sheath

Gaps between segments of oligodendrocytes or between individual Schwann cells are called ________.

• ganglia

• microglia

• nodes of Ranvier

• ependymal cells

• nerve tracts

The peripheral nervous system (PNS) consists of __________.

• the brain.

• the spinal cord.

• all the nerves and ganglia outside of the brain and spinal cord.

• the white and grey matter and the spinal cord.

• the white matter and the ganglia.

Which of these is NOT a component of the diencephalon?

• Thalamus

• Pons

• Pineal gland

• Hypothalamus

The numerous raised folds on the surface of each cerebral hemisphere are called ________.

• gyri

• sulci

• fissures

• lobes

• pineal bodies

The thickest and most superficial of the meninges is the ________.

• pia mater

• arachnoid layer

• dura mater

• choroid plexus

• dural sinus