IB Biological Approach

part of autonomic nervous, calms you down

• Parasympathetic 
• sympathetic 

chemical messager, released into the bloodstream, slow but long lasting

• neurotransmitter
• hormones

receiving end of a neuron

• dendrites
• synapatics

Which structure in neural communication passes messages through its branches?

• Neuron

• Dendrite

• Axon

• Myelin

Which type of cell communicates within the nervous system and processes information between incoming and outgoing messages?

• Glial cells
• Motor neurons
• Interneurons
• Sensory neurons

Which neurotransmitter affects mood, hunger, sleep, and arousal?

• Acetylcholine (ACh)
• Serotonin
• GABA
• Dopamine

Anna recently hit her head while rock climbing. Since the accident, her memory of the past has been limited and she has had trouble forming new memories. Based on this information she most likely damaged which brain component?

• Pons

• hippocampus

• hypothalamus

• thalamus

Peter was diagnosed with a disorder of the nervous system. His doctor explained that his brain is releasing neurotransmitters, the neurotransmitters are not being received. This means that his neurons most likely have which of the following malfunctioning?

• myelin sheath

• axon

• terminal buttons

• dendrites

In a neuron, the _____ conducts information to through the neuron, and the _____ receives information from other neurons?

• axon/dendrite

• dendrite/axon

• axon/soma

• soma/axon

Heart rate, digestion, pupil dilation are involuntary processes controlled by the ____ nervous system

• autonomic

• automatic

• peripheral

• somatic