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grin007 [14]
3 years ago
13

What controls the movement of an skeletal muscle

Biology
1 answer:
Ivenika [448]3 years ago
3 0

the CNS; because somatic motor neurons always cause contraction in skeletal muscle
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What organelle is responsible for folding proteins in the cell
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endoplasmic reticulum

Protein folding occurs in a cellular compartment called the endoplasmic reticulum. This is a vital cellular process because proteins must be correctly folded into specific, three-dimensional shapes in order to function correctly.

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how would the nervous system function be affected if both the presynaptic and postsynaptic neurons at every synapse had both syn
Ray Of Light [21]

Small, electron-lucent vesicles known as synaptic vesicles (SVs) are grouped at presynaptic terminals. They hold neurotransmitters and exocytosis, which is stimulated by calcium, releases them. After exocytosis, SVs are formed locally at the terminals.

  • From the presynaptic cell with synaptic vesicles to the postsynaptic cell with neurotransmitter receptors, a signal always moves in one direction across the chemical synapse.
  • The correct routing of nerve signals throughout the body is guaranteed by this one-way communication.
  • A signal is transmitted from one neuron—the presynaptic, or sending, neuron—to another neuron—the postsynaptic, or receiving, neuron—at the synapse, increasing or decreasing the likelihood that the postsynaptic neuron will fire its own action potential.
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7 0
2 years ago
Organisms may play only one role in an ecosystem true or false
anyanavicka [17]
This is false. Organisms may play several important roles in an ecosystem. Consider for example and ocean shore environment occupied by a particular species of crab. The crabs are scavengers and eat any organic matter they encounter. They therefore play an important role in the cycling of nutrients in the ecosystem. The crabs are however also an important source of food for a range of other species occupying the same habitat, including octopi, certain fishes and sea otters. Therefore, the crabs are an important part of the food web in the ecosystem. Many species similarly occupy multiple important roles in an ecosystem.
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Paleontologists and ecologists agree that ________. select one:
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The answer is B........

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3 years ago
What are the two main differences between capillaries in the periphery and capillaries surrounding the brain
Lorico [155]

Answer:

The options are not given but they are gotten from another websites.

A. Capillaries surrounding the brain have no pores and are surrounded by membranes of astrocyte cells.

B. Capillaries surrounding the brain have pores and are surrounded by membranes of astrocyte cells.

C. Capillaries surrounding the brain have no pores and are not surrounded by membranes of astrocyte cells.

D. Capillaries surrounding the brain have pores and are not surrounded by membranes of astrocyte cells.

The correct answer is option A.

Capillaries surrounding the brain have no pores and are surrounded by membranes of astrocyte cells.

Explanation:

Capillaries surrounding the brain have no pores and are surrounded by membranes of astrocyte cells because

Capillaries are tiny blood vessels in the circulatory system that connect aterioles to venules. They are the most abundant or they are much blood vessels. They can penetrate the tissues of the body which allow passage of food nutrients, oxygen in the body thereby allowing exchange of nutrients and oxygen between the body tissues and the blood.

Capillaries surrounding the brain have no pores and are surrounded by membranes of astrocyte cells while capillaries in the periphery Capillaries surrounding the brain have pores and are not surrounded by membranes of astrocyte cells.

8 0
3 years ago
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