Brain & Neurons
What is the main purpose of a neuron?
A) To transmit messages throughout the body
B) To store sensory memories
C) To control hormone production
D) To move muscles
A) To transmit messages throughout the body
The Central Nervous System (CNS) includes:
A) The brain and spinal cord
B) The spinal cord and heart
C) The brain and nerves
D) The spinal cord and glands
A) The brain and spinal cord
Sensation refers to:
A) The brain interpreting stimuli
B) Detecting information from the environment through sensory organs
C) Emotional responses to stimuli
D) Remembering sensations
B) Detecting information from the environment through sensory organs
The semicircular canals in our ear help you maintain:
A) Balance
B) Temperature
C) Smell
D) Sight
A) Balance
Consciousness is best defined as:
A) Awareness of your thoughts and surroundings
B) A deep sleep stage
C) A dream state
D) The absence of awareness
A) Awareness of your thoughts and surroundings
Which structure of the neuron receives messages from other cells?
A) Axon
B) Soma
C) Dendrite
D) Myelin sheath
C) Dendrite
Which system activates during a stressful or dangerous situation?
A) Parasympathetic
B) Sympathetic
C) Somatic
D) Endocrine
B) Sympathetic
Perception is influenced most by:
A) Environment and experience
B) Blood pressure
C) Reflexes
D) Brain size
A) Environment and experience
Sensory adaptation occurs when:
A) The brain gets tired of processing information
B) You stop noticing constant stimuli
C) A new sense develops
D) You are exposed to pain
B) You stop noticing constant stimuli
Which drug type slows brain activity and body functions?
A) Stimulants
B) Depressants
C) Hallucinogens
D) Opiates
B) Depressants
Which neurotransmitter helps you feel pleasure after accomplishing a goal?
A) Serotonin
B) GABA
C) Dopamine
D) Glutamate
C) Dopamine
The thyroid gland is most responsible for regulating:
A) Emotions
B) Reflexes
C) Metabolism
D) Growth spurts
C) Metabolism
Reading a jumbled sentence but still understanding it demonstrates:
A) Figure-ground
B) Sensory adaptation
C) Perception over sensation
D) Absolute threshold
C) Perception over sensation
An example of an absolute threshold would be:
A) Seeing a candle flame 30 miles away on a clear night
B) Ignoring your friend’s ringtone after a while
C) Smelling strong perfume immediately upon entering a room
D) Hearing multiple people talking at once
A) Seeing a candle flame 30 miles away on a clear night
Stimulants increase:
A) Relaxation and drowsiness
B) Alertness and energy
C) Dream intensity
D) Reflex suppression
B) Alertness and energy
Which of the following correctly describes how hormones communicate?
A) Hormones travel freely to any receptor
B) Hormones fit only with specific receptors
C) Hormones act only on nerve cells
D) Hormones attach randomly to cells
B) Hormones fit only with specific receptors
The Gestalt principle that allows you to separate objects from their backgrounds is called:
A) Closure
B) Figure-ground perception
C) Similarity
D) Continuity
B) Figure-ground perception
Selective attention allows you to:
A) Focus on one conversation in a noisy room
B) Notice all sounds equally
C) Increase sensory awareness
D) Eliminate sensory overload permanently
A) Focus on one conversation in a noisy room
If someone feels nauseous and irritable after quitting caffeine, they’re experiencing:
A) Tolerance
B) Withdrawal
C) Hallucination
D) Dependence
B) Withdrawal
If a person’s neurons cannot send signals properly because their axons are damaged, what symptom might appear?
A) Confusion
B) Slow reflexes or muscle weakness
C) Excess dopamine
D) Overactive vision
B) Slow reflexes or muscle weakness
Which endocrine glands release adrenaline to prepare the body for action?
A) Thyroid glands
B) Adrenal glands
C) Pituitary glands
D) Gonads
B) Adrenal glands
When your brain fills in unclear song lyrics or sounds, this shows:
A) Auditory adaptation
B) The McGurk Effect
C) Perceptual expectation
D) Sensory overload
C) Perceptual expectation
Which of the following is not part of the sense of touch?
A) Pressure
B) Temperature
C) Pain
D) Vision
D) Vision
Psychoactive drugs alter:
A) Heart structure
B) Neural communication and perception
C) DNA and gene expression
D) Reflex responses only
B) Neural communication and perception