TEAS 7 Nervous System Practice Questions

Which part of the nervous system consists of the brain and spinal cord?

A. Peripheral Nervous System (PNS)

B. Central Nervous System (CNS)

C. Somatic Nervous System

D. Autonomic Nervous System

B. Central Nervous System (CNS)

Memory Trick:

CNS = Command Center

Central = Control

Brain + Spinal Cord

What is the primary function of the nervous system?

A. Produce hormones

B. Digest food

C. Control and coordinate body activities

D. Produce blood cells

Answer: C. Control and coordinate body activities

Memory Trick:

Think: 🧠 Nervous System = Body's CEO It controls communication and coordination.

Which structure carries nerve impulses away from the cell body?

A. Dendrite

B. Nucleus

C. Axon

D. Cytoplasm

Axon

Memory Trick:

Axon = Away

"Axon takes impulses AWAY from the cell body."

Which neuron structure receives incoming signals?

A. Axon

B. Dendrite

C. Myelin sheath

D. Node of Ranvier

B. Dendrite

Memory Trick:

Dendrites = Doors Signals come INTO the neuron through the doors.

The gap between myelin sheath segments is called the:

A. Synapse

B. Cell body

C. Node of Ranvier

D. Ganglion

C. Node of Ranvier

Memory Trick:

Think: ⚡ "Impulse jumps from Node to Node."

This makes transmission faster.

How many pairs of cranial nerves arise from the brain?

A. 10

B. 12

C. 31

D. 24

B. 12

Memory Trick:

🧠 Brain = 12 cranial nerves

"Brain = 12"

How many pairs of spinal nerves arise from the spinal cord?

A. 12

B. 24

C. 31

D. 42

C. 31

Memory Trick:

Brain = 12 Spine = 31

Which type of neuron carries impulses from receptors to the CNS?

A. Motor neuron

B. Interneuron

C. Sensory neuron

D. Effector neuron

C. Sensory neuron

Memory Trick:

Sensory = Sends information to CNS

"Feeling goes IN."

Which type of neuron carries impulses from the CNS to muscles and glands?

A. Sensory neuron

B. Motor neuron

C. Interneuron

D. Receptor neuron

B. Motor neuron

Memory Trick:

Motor = Movement

Moves muscles.

Interneurons are primarily located in the:

A. Muscles

B. Skin

C. CNS

D. Peripheral nerves

C. CNS

Memory Trick:

Interneurons = "In-between neurons"

They connect sensory and motor neurons inside the CNS.

What is the correct pathway of a reflex arc?

A. Receptor → Motor neuron → CNS → Sensory neuron → Effector

B. Receptor → Sensory neuron → CNS → Motor neuron → Effector

C. Sensory neuron → Receptor → CNS → Effector → Motor neuron

D. CNS → Sensory neuron → Receptor → Motor neuron → Effector

B. Receptor → Sensory neuron → CNS → Motor neuron → Effector

Memory Trick:

R-S-C-M-E

Receptor Sensory neuron CNS Motor neuron Effector

Remember: ➡️ "Really Smart Cats Make Eggs"

During a reflex action, where is information processed first?

A. Brain

B. Muscle

C. Spinal cord

D. Skin

C. Spinal cord

Memory Trick:

Reflexes are FAST.

Spinal cord first → Brain later

Touch hot stove? ✋🔥 Move first, think later.

In a reflex arc, the muscle or gland that responds is called the:

A. Receptor

B. Effector

C. Ganglion

D. Dendrite

B. Effector

Memory Trick:

Effector = Effects the response

Which part of the brain is responsible for higher thinking, memory, and reasoning?

A. Cerebellum

B. Brain stem

C. Cerebrum

D. Spinal cord

C. Cerebrum

Memory Trick:

Cerebrum = Smart Part

Thinking Memory Learning Decision-making

Which structure controls balance and coordination?

A. Cerebrum

B. Cerebellum

C. Brain stem

D. Spinal cord

B. Cerebellum

Memory Trick:

CereBELLum = BALANCE

Both contain "BEL."

Which structure connects the brain to the spinal cord and controls vital functions such as breathing?

A. Cerebellum

B. Cerebrum

C. Brain stem

D. Dendrite

C. Brain stem

Memory Trick:

Brain Stem = Survival Center

Breathing Heart rate Blood pressure