Chapter 7 Homework

Which condition is caused by a lack of blood flow to the brain, leading to the death of brain tissue?

Stroke

Which condition involves a gradual loss of the myelin sheath in the central nervous system, leading to impaired nerve function?

Multiple sclerosis

What is the primary function of the cerebellum?

Coordinates balance and muscle activity

Which of the following is the basic functional unit of the nervous system?

Neuron

Which of the following is a risk factor for ischemic stroke?

Smoking

Which neurotransmitter is associated with mood regulation and is often targeted by antidepressant medications?

Serotonin

Which lobe of the brain is responsible for processing visual information?

Occipital lobe

What is the role of the myelin sheath in neuron function?

Increases the speed of impulse transmission

What is the purpose of administering tPA in the patient?

To dissolve the blood clot

Central nervous system

Brain and spinal cord

Peripheral nervous system

Nerves in the body outside the brain and spinal cord

Autonomic nervous system

Controls involuntary muscles and glands (heart rate, etc.)

Somatic nervous system

Controls voluntary muscles in the body

Sympathetic nervous system

Autonomic division responsible for the “flight or fight” response in response to stress

Parasympathetic nervous system

Autonomic division of the nervous system responsible for the “rest and digest” response

Which part of the brain is most likely affected, given the patient’s symptoms?

Left cerebral hemisphere

Synapse

Point of communication between two neurons

Aphasia

Inability to speak or understand language

Neuroglia

Support and protect nervous tissue

Axon

Fiber that carries impulses away from the neuron cell body

Which disorder is characterized by a sudden, brief disruption in normal brain activity, often resulting in convulsions or altered consciousness?

Seizure disorder

__________ neurons carry sensory impulses from the body to the brain ________ neurons carry motor impulses from the brain to the body.

Afferent, efferent

Which best describes the cranial nerves?

Nerves coming directly out of the brain

Which neurological disorder is characterized by progressive loss of memory and cognitive function, often in older adults?

Alzheimer’s disease

What does the CT scan reveal in this case?

Occlusion in a cerebral artery

Which division of the nervous system control involuntary actions such as heart rate and digestion?

Autonomic nervous system (ANS)

What is the function of the medulla oblongata?

Regulates heart rate and blood pressure

What type of stroke occurs when a blood vessel ruptures in the brain, leading to bleeding?

Hemorrhagic stroke