Anatomy of the Nervous System Quiz
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Questions and Answers

Rami communicantes connect the spinal nerve to the sympathetic trunk.

True

There are seven cervical nerves in total.

False

Dermatomes are used only to test muscle strength.

False

The Oculomotor Nerve is classified as a pure motor nerve.

<p>True</p> Signup and view all the answers

Local anaesthesia can be used to numb a specific dermatome.

<p>True</p> Signup and view all the answers

The cerebellum makes up 11% of the brain’s mass.

<p>True</p> Signup and view all the answers

The Circle of Willis is formed by four arteries.

<p>False</p> Signup and view all the answers

The peripheral nervous system (PNS) consists only of cranial nerves.

<p>False</p> Signup and view all the answers

The cerebellar activity occurs subconsciously.

<p>True</p> Signup and view all the answers

The PNS is subdivided into the sensory-somatic nervous system and the central nervous system.

<p>False</p> Signup and view all the answers

The anterior communicating artery is a paired artery.

<p>False</p> Signup and view all the answers

All fibres in the cerebellum are contralateral.

<p>False</p> Signup and view all the answers

The cerebellum has two bilaterally symmetrical hemispheres connected by the vermis.

<p>True</p> Signup and view all the answers

The superior gluteal nerve is associated with ventral rami from L4 and L5.

<p>True</p> Signup and view all the answers

The inferior gluteal nerve has contributions from ventral rami S1, S2, and S3.

<p>True</p> Signup and view all the answers

The sciatic nerve includes fibers from the lumbar region.

<p>False</p> Signup and view all the answers

The pudendal nerve originates from the sacral plexus.

<p>True</p> Signup and view all the answers

The common fibular nerve is a branch of the tibial nerve.

<p>False</p> Signup and view all the answers

The deep fibular nerve provides sensory innervation to the plantar surface of the foot.

<p>False</p> Signup and view all the answers

The lumbosacral trunk is part of the sacral plexus.

<p>True</p> Signup and view all the answers

The posterior femoral cutaneous nerve arises from the ventral rami of spinal nerves S1 to S3.

<p>True</p> Signup and view all the answers

The cerebral hemispheres make up 83% of the brain's mass.

<p>True</p> Signup and view all the answers

The cortex is composed of white matter and accounts for roughly 40% of the brain's mass.

<p>False</p> Signup and view all the answers

The central sulcus separates the temporal and parietal lobes.

<p>False</p> Signup and view all the answers

Broca's area is located in the occipital lobe.

<p>False</p> Signup and view all the answers

Broca's aphasia involves a patient who cannot produce any speech.

<p>True</p> Signup and view all the answers

The lateral sulcus separates the parietal and temporal lobes.

<p>True</p> Signup and view all the answers

Each hemisphere of the brain acts contralaterally.

<p>True</p> Signup and view all the answers

Wernicke's area is located in the frontal lobe and is responsible for speech production.

<p>False</p> Signup and view all the answers

The brain has only three functional areas: motor, sensory, and cognitive.

<p>False</p> Signup and view all the answers

Cerebral white matter consists of myelinated fibers that facilitate communication within the CNS.

<p>True</p> Signup and view all the answers

The precentral and postcentral gyri border the central sulcus.

<p>True</p> Signup and view all the answers

Commissural fibers in the brain connect different parts of the same hemisphere.

<p>False</p> Signup and view all the answers

The thalamus plays a key role in mediating sensation and motor activities.

<p>True</p> Signup and view all the answers

The hypothalamus is involved in regulating blood pressure and heart rate.

<p>True</p> Signup and view all the answers

Melatonin is produced by the thalamus and is important for digestive health.

<p>False</p> Signup and view all the answers

Basal ganglia are involved in regulating attention and cognition.

<p>True</p> Signup and view all the answers

The infundibulum connects the hypothalamus to the spinal cord.

<p>False</p> Signup and view all the answers

The brainstem contains nuclei from which cranial nerves arise.

<p>True</p> Signup and view all the answers

In the thoracic region, intercostal nerves do not divide into lateral cutaneous branches.

<p>False</p> Signup and view all the answers

The posterior rami consist only of medial branches.

<p>False</p> Signup and view all the answers

Cervical plexus includes the hypoglossal nerve (XII).

<p>True</p> Signup and view all the answers

The femoral nerve is part of the lumbar plexus with contributions from L2, L3, and L4.

<p>True</p> Signup and view all the answers

The ansa cervicalis is associated with the ventral rami of C4.

<p>True</p> Signup and view all the answers

The ilioinguinal nerve is part of the cervical plexus.

<p>False</p> Signup and view all the answers

Supraclavicular nerves originate from the cervical plexus.

<p>True</p> Signup and view all the answers

Lateral femoral cutaneous nerve is part of the thoracic plexus.

<p>False</p> Signup and view all the answers

The phrenic nerve is associated with the ventral rami of C5.

<p>True</p> Signup and view all the answers

The lumbar plexus includes the obturator nerve, which originates from L2, L3, and L4.

<p>True</p> Signup and view all the answers

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