Stuvia BIO251L Module 6 Exam

During a lumbar puncture, cerebrospinal fluid (CSF) is collected for diagnostic purposes. The needle passes through the thin meninge with hair-like extensions of tissue that contain CSF in the space beneath it. Which meningeal layer is this?

Arachnoid mater

Sulci are deep grooves in the brain that separate large regions such as the cerebral hemispheres (True or False)

False

Theta waves are typically observed in

Children and sometimes in adults during concentration

In the image, the letter E is pointing to which structure?

Parieto-occipital sulcus

Parietal lobe

Processes sensory input from the body

Frontal lobe

Functions in decision making and personality

Involved in processing auditory information

Temporal lobe

Responsible for visual processing

Occipital lobe

Which sulcus separates the temporal lobe from the frontal and parietal lobes?

Lateral sulcus

Which part of the brain controls autonomic functions like heart rate and respiration?

Medulla oblongata

Which structure connects the two cerebral hemispheres?

Corpus callosum

Which brain region is primarily responsible for balance and coordination?

Cerebellum

Which brain structure acts as a relay station for sensory information to the cerebral cortex?

Thalamus

Which brain structure regulates homeostasis, including hunger, thirst, and body temperature?

Hypothalamus

Which part of the neuron conducts impulses away from the cell body?

Axon

Which part of the neuron receives incoming signals?

Dendrite

Which glial produces myelin in the CNS?

Oligodendrocyte

Which glial cell produces myelin in the PNS?

Schwann cell

Which glial cell maintains the blood-brain barrier and provides structural support in the CNS?

Astrocyte

Which glial cell acts as a macrophage in the CNS?

Microglia

Which glial cell lines the ventricles of the brain and produces cerebrospinal fluid (CSF)?

Ependymal cell

Which part of the neuron integrates incoming signals and generates action potentials?

Axon hillock

Which type of synapse uses chemical neurotransmitters?

Chemical synapse

Which ion is primarily responsible for depolarization during an action potential?

Sodium (Na+)

Which ion is primarily responsible for depolarization during an action potential?

Potassium (K+)

Which ion triggers neurotransmitter release at the axon terminal?

Calcium (Ca²+)

Which division of the nervous system carries signals to skeletal muscles?

Somatic nervous system

Which division of the nervous system controls smooth muscles, cardiac muscles, and glands?

Autonomic nervous system

Which division of the autonomic nervous is responsible for “fight or flight” responses?

Sympathetic

Which division of the autonomic nervous system is responsible for “rest and digest” responses?

Parasympathetic