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What is the nerve impulse pathway of a voluntary action?
The nerve impulse pathway of a voluntary action begins in the brain, where motor commands are generated in the motor cortex. These signals travel down the spinal cord through upper motor neurons, which synapse with lower motor neurons in the spinal gray matter. The lower motor neurons then send impulses through their axons to the skeletal muscles, causing contraction and movement. This entire process involves the integration of sensory feedback and coordination from various brain regions to execute the voluntary action smoothly.
What tract carries sensory impulses from the lower limbs and inferior body trunk?
The spinothalamic tract carries sensory impulses related to pain, temperature, and crude touch from the lower limbs and inferior body trunk to the brain.
What cranial nerve provides sensory information from the upper and lower jaws to the brain?
The trigeminal nerve (cranial nerve V) is responsible for providing sensory information from the upper and lower jaws to the brain. It has three major branches: the ophthalmic, maxillary, and mandibular nerves. The maxillary branch conveys sensory information from the upper jaw, while the mandibular branch does so for the lower jaw. This nerve plays a crucial role in facial sensation and the perception of pain, touch, and temperature in these areas.
What part of the brain is injured when you can't feel anything in your lower body?
When you can't feel anything in your lower body, it may indicate injury to the spinal cord, particularly in the regions that transmit sensory information from the lower body to the brain. Damage to the spinal cord, especially in the thoracic or lumbar regions, can disrupt nerve pathways responsible for sensation. Additionally, injury to the somatosensory cortex in the brain, which processes sensory information, could also contribute to this loss of feeling.
What are the ascending fibres of projection fibres?
They are fibres which radiate from thalamus and metathalamus to the cerebral cortex. They include:Anterior thalamic radiationsuperior thalamic (sensory) radiationposterior thalamic radiation, which consists of = optic + auditory radiations
What is the nerve impulse pathway of a voluntary action?
The nerve impulse pathway of a voluntary action begins in the brain, where motor commands are generated in the motor cortex. These signals travel down the spinal cord through upper motor neurons, which synapse with lower motor neurons in the spinal gray matter. The lower motor neurons then send impulses through their axons to the skeletal muscles, causing contraction and movement. This entire process involves the integration of sensory feedback and coordination from various brain regions to execute the voluntary action smoothly.
What tract carries sensory impulses from the lower limbs and inferior body trunk?
The spinothalamic tract carries sensory impulses related to pain, temperature, and crude touch from the lower limbs and inferior body trunk to the brain.
What cranial nerve provides sensory information from the upper and lower jaws to the brain?
The trigeminal nerve (cranial nerve V) is responsible for providing sensory information from the upper and lower jaws to the brain. It has three major branches: the ophthalmic, maxillary, and mandibular nerves. The maxillary branch conveys sensory information from the upper jaw, while the mandibular branch does so for the lower jaw. This nerve plays a crucial role in facial sensation and the perception of pain, touch, and temperature in these areas.
What part of the brain is injured when you can't feel anything in your lower body?
When you can't feel anything in your lower body, it may indicate injury to the spinal cord, particularly in the regions that transmit sensory information from the lower body to the brain. Damage to the spinal cord, especially in the thoracic or lumbar regions, can disrupt nerve pathways responsible for sensation. Additionally, injury to the somatosensory cortex in the brain, which processes sensory information, could also contribute to this loss of feeling.
What are the ascending fibres of projection fibres?
They are fibres which radiate from thalamus and metathalamus to the cerebral cortex. They include:Anterior thalamic radiationsuperior thalamic (sensory) radiationposterior thalamic radiation, which consists of = optic + auditory radiations
Where is Cervical plexus in the sensory pathway?
lower back
What is lower pons?
The lower pons is a region located in the brainstem, which is responsible for relaying sensory and motor information between the cerebrum and the medulla oblongata. It also plays a vital role in controlling certain functions such as facial expressions, sleep, and consciousness.
What we perceive as the pitch of sound is our sensory response to its?
frequency. The pitch of a sound is determined by the frequency of the sound wave, with higher frequencies corresponding to higher pitch sounds and lower frequencies to lower pitch sounds. Our ears and brain interpret these frequency signals to perceive pitch.
What is the Trigeminal branch to the tongue?
None actually go to the tongue... Trigeminal nerve - (V) fifth cranial nerve V1: Ophtalmic-eye, forehead and nose.1-Sensory V2: Maxillary - upper teeth, gums and lip, the cheek, lower eyelid and the side of the nose.1-Sensory V3: Mandibular - lower teeth, lower gums and lower lip.1-Sensory - Jaw.2-Motor 1SENSORY: Transmits pressure, touch, pain and temperature signals to the brain. 2MOTOR: Controls movement. http://www.tnaaustralia.org.au
What is lower threshold voltage?
the voltage above which any device starts conducting
What section of the brain includes the medulla?
the lower half of the brain stem.
Which structure links the upper and lower centers of the brain?
The brainstem is the structure that links the upper and lower centers of the brain. It connects the cerebrum (upper brain) to the spinal cord (lower brain) and is responsible for basic life functions such as breathing, heartbeat, and blood pressure regulation.
