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What are the differences between long and short reflexes?
I believe a short reflex is when one is partially aroused, as during a bumpy car ride or Kate Winslet's nude scene in Titanic. A long reflex is when the member becomes fully hugified, as during any Paul Walker movie.
Do neurons undergo mitosis during their life cycle?
No, neurons do not undergo mitosis during their life cycle. Once they are fully developed, neurons typically do not divide or replicate like other cells in the body.
How many brain cells does the brain make in a day?
The brain does not typically make new brain cells (neurons) in large numbers on a daily basis in adult humans. The process of neurogenesis (formation of new neurons) primarily occurs during prenatal development and in specific areas of the brain, such as the hippocampus, in adulthood.
What changes occur in the brain during the teenage years?
During the teenage years, the brain undergoes significant changes in its structure and function. This includes pruning of unused neural connections, increased myelination for faster signaling, and development of the prefrontal cortex responsible for decision-making and impulse control. Hormonal changes also play a role in shaping emotional responses and behavior during this period.
Most neurons lack centrioles This observation explains?
the inability of most neurons to undergo cell division. Centrioles are required for the organization of the mitotic spindle during cell division. Since neurons lack centrioles, they are unable to divide and are primarily post-mitotic cells.
What is a innate reflex?
Innate reflexes are reflexes that result from the connections of neurons during their development.
What is the usual order of development of spoken language?
reflexes, cooing, babbling, spoken word..... Reflexes are the first to be shown as they start reflexes as soon as they are born.
When are most neurons made?
the age that the body has the most neurons is at birth.
Where do Preganglionic neurons develop from?
Preganglionic neurons develop from the neural tube during embryonic development. They are part of the autonomic nervous system and transmit signals from the central nervous system to the autonomic ganglia, where they synapse with postganglionic neurons.
What is transient exburerance?
Transient exuberance is a temporary increase in the number of synaptic connections between neurons in the brain, often observed during early brain development. This phenomenon is crucial for the formation of neural circuits and learning.
What is the difference between radial and tangential migration?
Radial migration refers to the movement of neurons from the ventricular zone to the outer layers of the cortex during brain development, while tangential migration involves the movement of neurons parallel to the surface of the brain. Radial migration is crucial for the establishment of the brain's layered structure, while tangential migration contributes to the distribution of neurons across different brain regions.
What are the differences between long and short reflexes?
I believe a short reflex is when one is partially aroused, as during a bumpy car ride or Kate Winslet's nude scene in Titanic. A long reflex is when the member becomes fully hugified, as during any Paul Walker movie.
How are neurons formed?
Neurons are formed during early development through a process called neurogenesis. Neural stem cells located in the brain divide and differentiate into neurons. This process involves the growth of axons and dendrites, as well as the establishment of connections with other neurons to form a functional neural network.
How long does it take for neurons to connect?
The process of connecting neurons, known as synaptogenesis, begins during early brain development and continues throughout life. It can take milliseconds to establish connections between neurons in response to stimuli, and the formation of more complex neural circuits can take days to weeks. Additionally, the speed of neuron connections can vary based on factors such as age, experience, and neural plasticity.
How does the four major elements of a simple nervous pathway function during pain withdrawal reflex?
During a pain withdrawal reflex impulses are sent through different nerves and to the spinal cord. This reflex does not make it to the brain but only to the spinal cord. We call this involuntary action because we dont control reflexes. The sensory neurons are the first to recieve the impulse, then they travel to the interneurons, or associative neurons, and then they go to the motor neurons which carries the impulse to the central nervous system. Then the effector is the response, so in this case your musscle will contract.
Where does the nerve cell come from?
Nerve cells, or neurons, originate from neural stem cells during a process called neurogenesis, which occurs primarily during embryonic development. These stem cells differentiate into various types of neurons and glial cells in response to specific signaling cues. After their formation, neurons migrate to their designated locations in the nervous system, where they form connections with other neurons to establish functional networks. This process continues into early postnatal life, but the majority of neuron generation occurs during embryonic and early developmental stages.
Do neurons undergo mitosis during their life cycle?
No, neurons do not undergo mitosis during their life cycle. Once they are fully developed, neurons typically do not divide or replicate like other cells in the body.
