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Starfish, or sea stars, lack a brain and central nervous system. They do have a nervous system that can sense things like orientation, touch, temperature and light.
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Do birds have a nerve cord?
Birds are vertebrate chordates, which means they have a spinal column and a dorsal nerve chord, just like people. In fact, they are a commonly used model system in developmental biology for how the central nervous system of chordates develop.
What is the function of an anterior ganglia in a planarian?
The ganglia is a concentration of nerves, analogous to the brain, best used for coordination.
Do guys get nervous around girls?
yeah we do before i asked my girlfriend out i used to super, nervous around her which was a little weird cause I've never been nervous around a girl before well either yeah we get nervous too.
Function of madreporite?
It is a small spot located just off-center on top of a starfish. That is where the water that is used to operate the tube feet is filtered before entering the animal. It is also called the sieve plate.
System based on shared characteristics is used to classify organisms?
The seven level system
What is a group of drugs that depresses the activities of the central nervous system?
Barbiturates. Also, benzodiazepines, when administered in significant dosages.
What drug category is Dexedrine classified as?
Dexedrine is classified as a central nervous system stimulant. Central nervous system stimulants vary in strength, but all cause an increase in wakefulness and concentration; they are used for treating ADHD and narcolepsy.
What is the purpose of central nervous system stimulants?
Central nervous system stimulants are used to keep patients who suffer from narcolepsy from falling asleep. Narcolepsy is a disorder that causes people to fall asleep during daytime hours.
What is a group of drugs that slow down the central nervous system cause drowsiness and can be used as painkillers?
Opiates.
Is Barbiturates are depressants and are widely used to decrease central nervous system activity is that true or false?
true
How can herbs help cluster headaches?
Nervous system relaxant herbs, used singly or in combination, can allow the central nervous system to relax as well as assist in peripheral nerve response.
Which of the following is a legal prescription central nervous system stimulant that is also sometimes abused?
Central nervous system (CNS) stimulants are drugs that increase activity in certain areas of the brain. These drugs are used to improve wakefulness in patients that have narcolepsy.
What is the criteria used to functionally classify neurons?
The direction in which the nerve impulse travels relative to the central nervous system
Which criteria is used to functionally classify neurons?
The direction in which the nerve impulse travels relative to the central nervous system.
What is the basic unit of structure and functon of the nervous system?
The nervous system is used to trasmit information around the body. It is made of two systems: the central nervous system (which consists of the spine and brain) and the peripheral nervous system (which consists of neurones and receptors). There are three types of neurones: sensory neurones, relay neurons, and motor neurones.
What is a cerebrospinal fluid analysis used for?
The purpose of a CSF analysis is to diagnose medical disorders that affect the central nervous system.
Neurotransmitter used to cause muscle contraction?
A neurotransmitter that causes muscle movement is called Acetylcholine. Acetycholine acts as on both the central nervous system and the peripheral nervous system.
