Nervous system worksheet PDF

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Algonquin College Pre Health Sciences Human Biology BIO 0005 Nervous System Review Worksheet Part A: Label the following diagram of a neuron

Part B: Label the following diagram of the brain

Part C: Multiple Choice 1.

Cells that support, protect or insulate other neurons are called: a) Nerves b) neurons c) neuroglia d) neurotransmitters

2.

The two main divisions of the nervous system are the: a) central NS and parasympathetic NS c) parasympathetic NS and sympathetic NS b) peripheral NS and sympathetic NS d) central NS and peripheral NS

3.

A structure on some neurons which insulates and speeds up the rate of an electrical signal is the: a) dendrite b) myelin sheath c) node of Ranvier d) axon terminal

4. Which statement about neuron types is true? a) interneurons are located entirely in the CNS b) motor neurons are also called afferent neurons c) sensory neurons carry electrical signals away from the CNS d) motor neurons carry electrical signals towards the CNS 5. What can be said about the neuron shown here? a) it is a multipolar neuron b) it functions as a special sense neuron c) it is a unipolar neuron d) it makes up 99% of all neurons 6. Within a resting neuron: a) there is more potassium in the ECF compared to the ICF b) there is more sodium in the ICF compared to the ECF c) voltage-gated sodium channels are open d) the resting membrane potential is -70mV 7.

__________________ refers to the stage of a neuronal impulse where threshold has been reached and the signal will travel down the entire length of the axon without stopping. a) Resting membrane potential c) repolarization b) Propagation d) depolarization

8.

Where are neurotransmitters stored in a neuron? a) cell body b) axon terminal c) dendrite

d) node of Ranvier

9. In the somatic motor division of the peripheral NS: a) impulses travel to skeletal muscles c) impulses travel to smooth muscles and glands b) impulses travel to cardiac muscle d) impulses travel to involuntary muscles 10. White matter primarily contains: a) cell bodies and dendrites b) myelinated dendrites

c) unmyelinated axons d) myelinated axons

11. All of the following structures are part of the brainstem except: a) cerebellum b) pons c) midbrain d) medulla 12. The part of the brain which acts as a relay station for sensory information going to the cerebral cortex is: a) hypothalamus b) thalamus c) cerebellum d) cerebrum 13. Which statement about the cerebrum is true? a) its outer layer is called the cerebral cortex and consists of white matter b) it consists of two hemispheres connected by grey matter c) each half of the cerebrum controls sensory and motor function on the opposite side of the body d) its outer layer is divided into 3 functional lobes 14. Your `fight or flight’ response involves which specific division of the nervous system? a) somatic sensory division c) somatic motor division b) parasympathetic NS d) sympathetic NS 15. This part of the brain regulates blood pressure, water balance, hunger and thirst. a) hypothalamus b) medulla c) thalamus d) midbrain

Part D: Fill in the blank 1.

A brief change in membrane potential at a node of Ranvier is called an _________________.

2.

Spinal nerves and cranial nerves comprise the __________ nervous system.

3.

The space between two neurons is called the _________________.

4.

The ______________ act as a protective connective tissue `bag’ around the brain and spinal cord.

5.

The _________ cell forms the myelin sheath around certain axons of the nervous system.

6.

When a neuron is being repolarized, ___________ voltage- gated channels are open and ________ voltagegated channels are closed.

7.

A __________ contains bundle of axons which carry sensory signals, motor signals or both signals.

8.

In the spinal cord, _________ matter is on the outside and ________ matter is on the inside.

9.

The outer layer of the cerebrum is called the _______________________.

10. The part of the neuron which contains the nucleus, mitochondria, ribosomes and other organelles is called the _________________....