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- Lateral lemniscus = carrying hearing impulsesfrom both ears (mainly from the opposite side)
- Spinal lemniscus = carrying pain, temperature and crude touch (from the opposite side of the body, below the head)
- Trigeminal lemniscus = carrying pain, temperature, touch and proprioception (from the opposite side of the face and scalp)
- Medial lemniscus = carrying proprioceptive and fine touch (from the opposite side of the body, below the head)
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What part of the brain mediates BOTH voluntary and involuntary functions?
The Pons
Is the brainstem divided into three structures?
Yes, the brainstem is divided into three structures: the midbrain, the pons, and the medulla oblongata. These structures are responsible for controlling basic functions such as breathing, heart rate, and sleep cycle.
What is the function pons?
it controls levels of pons
What does the pons control in the brain?
The functions of the pons include arousal, assisting in controlling autonomic functions, relying sensory information between the cerebrum and cerebellum and sleep. The structure of the brain called the "midbrain" is located just above the spinal cord and is the smallest region of the brain. It controls some very important functions, such as acting as sort of a relay station for auditory and visual information. The midbrain controls the visual and auditory systems as well as eye movement. Portions of the midbrain called the red nucleus and the substantia nigra are involved in the control of body movement. The darkly pigmented substantia nigra contains a large number of dopamine-producing neurons. The degeneration of neurons in the substantia nigra is associated with Parkinson's disease.
How is the form of the tracheal wall related to its four functions?
No
What is the definition of the four lemnisci that can be found in the pons?
They are four bands of ascending sensory fibres in the brain stem. Each lemniscus starts from a decussation below and ends in the thalamus above.
What is the meaning of spinal lemniscus - is it the same as medial lemniscus and lateral lemniscus?
No, they are not the same thing. Spinal, medial, lateral and also trigeminal lemnisci can be found in the pons. They are bands of ascending sensory fibres in the brain stem and each of this lemnisci carry different types of sensations.
What part of the brain mediates BOTH voluntary and involuntary functions?
The Pons
What functions as a bridge to interconnect messages between the spinal cord and brain?
The pons
Abnormality in the pons of the brain?
The pons of the brain generally functions to send information from the forebrain to the cerebellum. It plays a large role in sleep paralysis and generation of dreams, and damage to the pons often results in sleep abnormalities.
What are the two main parts of pons?
Basilar (ventral/anterior) part, which contains =pontine nuclei + transverse fibres + longitudinal fibres (pyramidal tracts and corticopontine fibres)Tegmental (dorsal/posterior) part, which contains = nuclei of the middle four cranial nerves (trigeminal, abducen, facial and vestibulocochlear nerves) + 4 Lemnisci (lateral, spinal, trigeminal and medial)
Which nuclei are found in the pons?
The pons contains nuclei involved in various functions such as sleep, respiration, taste, hearing, and eye movement. Some specific nuclei found in the pons include the pontine nuclei, locus coeruleus, and the abducens nucleus.
What is the hindbrain functions?
controls basic functions such as breathing, heart rate, & blood pressure The hindbrain includes the cerebellum, the pons, and the medulla oblongata.
What are pons functions?
The pons plays a key role in regulating sleep, respiration, swallowing, bladder control, and transmitting messages between different parts of the brain. It also helps coordinate movements and balance.
What does pons and medulla have in common?
The pons is a bulb that is cranial (towards the crown of the skull) with respect to the medulla oblongata (in turn caudal -- towards the tailbone, with respect to the pons). The pons relays sensory information between the cerebellum and the cerebrum, while also regulating arousal and breathing. The medulla controls blood pressure, heart rate, breathing and other autonomic functions.
What are the four primary structural components of pons?
four cranial nerves (V or trigeminal, VI or abducens, VII or facial, & VIII or vestibulocochlear)
Is the brainstem divided into three structures?
Yes, the brainstem is divided into three structures: the midbrain, the pons, and the medulla oblongata. These structures are responsible for controlling basic functions such as breathing, heart rate, and sleep cycle.
