Psychology Concepts and Neurobiology

Front

A patient experiences loss of sensation and movement below the waist following a car accident that damaged vertebrae in their lower back. Which part of the nervous system has most likely been directly injured?

Back

Central nervous system

Front

Sarah touches a hot stove and immediately pulls her hand away before she consciously feels pain. This rapid protective response is mediated primarily by:

Back

The reflex arc

Front

After eating a large meal, Miguel notices he feels relaxed and his digestive system becomes more active. Which subdivision of the nervous system is primarily responsible for these post-meal responses?

Back

Parasympathetic nervous system

Front

During a frightening encounter with a bear while hiking, Alex experiences increased heart rate, dilated pupils, and sweating. These physiological responses are primarily controlled by the:

Back

Sympathetic nervous system

Front

A marathon runner has been training for months. During races, she can maintain conscious control of her running pace and technique. Which division of the nervous system is primarily responsible for this voluntary muscle control?

Back

Somatic nervous system

Front

A researcher is studying cells that support neurons by providing nutrients, removing waste, and insulating neural connections. Which cells is the researcher studying?

Back

Glial cells

Front

After consuming alcohol, a person requires increasingly stronger stimuli to elicit the same sensory response. This phenomenon occurs because alcohol affects the neuron's:

Back

Threshold

Front

A biology student observes that when she stimulates a neuron with a weak electrical current, no response occurs. When she slightly increases the current, the neuron suddenly fires. This observation best demonstrates:

Back

The all-or-nothing principle

Front

A patient with myasthenia gravis experiences muscle weakness that worsens with repeated movements. This condition involves:

Back

Antibodies blocking acetylcholine receptors

Front

A new antidepressant medication works by preventing the reabsorption of serotonin into the presynaptic neuron. This medication functions as a:

Back

Reuptake inhibitor