Answer: A neuron has three main parts: dendrites, an axon, and a cell body or soma , which can be represented as the branches, roots and trunk of a tree, respectively. A dendrite (tree branch) is where a neuron receives input from other cells. Dendrites branch as they move towards their tips, just like tree branches do, and they even have leaf-like structures on them called spines.
The axon (tree roots) is the output structure of the neuron; when a neuron wants to talk to another neuron, it sends an electrical message called an action potential throughout the entire axon.
The features of neurons help them to carry out their function efficiently:
they have a long fibre (axon) so they can carry messages up and down the body over long distances
in a stimulated neuron, an electrical nerve impulse passes along the axon
the axon is insulated by a fatty (myelin) sheath - the fatty sheath increases the speed of the nerve impulses along the neuron
at each end of the neuron are tiny branches (dendrons), which branch even further into dendrites - the dendrites receive incoming nerve impulses from other neurons
Explanation:
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Hello the answer is the bacterium Streptococcus mutants that causes dental plaque formation.
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Answer:
Option C
Explanation:
There are cases when two organism of different species mate to produce offspring but that offspring is unable to reproduce further. Hence, such organisms do not belong to the same species. Thus, Option D is incorrect
However, when two organisms are able to reproduce viable offspring, they are said to be of the same species. Such organisms are also similar in looks.
Hence, option C is correct
What would most likely occur is that the organisms that eat salmon would have less food to eat and if their food supply, in this case, salmon were to run out, they would die or they would have to find something else to eat. If the organism that eats the salmon dies, in this case we'll call that organism, organism A, any other organisms that eat organism A will die or will have to find another means of food. So basically it causes a disruption in the food chain which can lead to the extinction of different species
Answer:
The dense irregular connective tissue that covers muscle fascicles and holds them together is called the epimysium (option a)
Each individual muscle fiber is covered by a layer of connective tissue called the endomysium (option e)
Explanation:
The epimysium is the sheath of dense connective tissue that surrounds the entire set of fascicles that form the muscle. The innervation and irrigation of the muscle reaches the epimysium.
The endomysium is a thin layer of reticular fibers that surrounds muscle fibers individually. There are only capillaries of very small caliber and very thin nerves.
