Cranial Nerve Nuclei And Column Flashcards
What do the pharyngeal arches supply?
Mastication muscles and facial muscles
Pharyngeal arches are critical structures in the development of the head and neck region.
What do the somatic muscles in the head and neck primarily derive from?
Neural tube
The neural tube gives rise to various structures, including somatic muscles.
Which cranial nerve nuclei are associated with somatic motor functions?
Cranial Nerve Nuclei III, IV, VI and XII
These nuclei control extraocular muscles and tongue movements
What is the function of the Alar plate?
Sensory functions
The Alar plate is involved in sensory processing in the nervous system.
What is the function of the Basal Plate?
Motor functions
The Basal Plate contains motor neurons that are crucial for movement.
Fill in the blank: The sulcus limitans separates the _______ and _______ in the developing nervous system.
Alar plate, Basal plate
What type of muscles do the special visceral efferents supply?
Muscles from pharyngeal arches
These muscles are involved in functions such as swallowing.
What is the general sensation provided by General Somatic Afferent (GSA)?
General sensation from the body wall
This includes sensations such as touch and pain.
True or False: The special visceral afferent (SVA) is responsible for taste sensation.
True
Which cranial nerve is associated with olfaction?
CN I (Olfactory Nerve)
No cranial nuclei are associated with olfaction as it is a direct sensory input.
What does GVE stand for in the context of cranial nerves?
General Visceral Efferent
GVE fibers control involuntary muscles and glands.
What is the role of the vestibular nucleus?
Balance and spatial orientation
It plays a crucial role in maintaining balance.
Which cranial nerve is involved in hearing and balance?
CN VIII (Vestibulocochlear Nerve)
This nerve transmits auditory and vestibular information.
What do GVA fibers transmit?
General visceral sensations
These include sensations from internal organs.
Fill in the blank: The _______ is responsible for the motor innervation of the tongue muscles derived from somites.
Hypoglossal Nerve (CN XII)
Which cranial nerves are associated with the medulla oblongata?
CN IX, X, XI
These nerves have various functions including swallowing and vocalization.
What is the function of smooth muscle and glands innervated by cranial nerves?
Involuntary control of bodily functions
This includes functions like digestion and heart rate.
What nerve is responsible for the muscles of the palate and pharynx?
Cranial accessory nerve via vagus or Vago Accessory Complex (VAC)
What are the effects of an injury to the Nucleus of Ambiguous?
• I/L Bulbar Paralysis (tongue muscle spared)
• Loss of Gag Reflex (due to IX & X nerve)
Which muscles are innervated by the Sphincter Pupillae and Ciliaris?
Ciliary muscles and Sphincter Pupillae
Which cranial nerve innervates the Parotid Gland?
IX (Glossopharyngeal Nerve)
What is the parasympathetic outflow of the cranio-sacral system?
Parasympathetic outflow is cranio-sacral
What is the thoracolumbar outflow associated with?
Sympathetic outflow from T1 to L4
What type of reflex is the Jaw Masseteric Reflex?
Monocephalic reflex
