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I am Lyosha [343]
3 years ago
14

Microfilaments and microtubules are part of the __________ of a cell.

Medicine
1 answer:
xxMikexx [17]3 years ago
8 0

Answer: Option A. "Cytoskeleton"

Explanation:

Cytoskeleton can be defined as the network of protein filaments in the cytoplasm eukaryotic cells interlinking from cell nucleus to cell membrane.

There are three basic types of protein fibers present in cytoskeleton that includes micro filaments (Actin filaments ), microtubules and intermediate filaments.

Microfilaments are consist many linked monomers of a protein known as actin, that combines in a double helix with a diameter of about 7 nano-meter and functions as serving tracks for myosin (motor protein).

Microtubules are arranged in a form of hollow straw like structure made up of consist of tubulin proteins having diameter of about 25 nano-meter and further consist of two subunits, α-tubulin and β-tubulin.

Intermediate filaments are the cytoskeletal element which are made up of multiple strands of fibrous proteins wounded together having an average diameter of 8 to 10 nano-meter.

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Explanation:

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3 years ago
Mae has fought a chronic condition for many years and is now on hospice. When her nurse notices her lack of desire to eat, restl
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Mae has fought a chronic condition for many years and is now on hospice. When her nurse notices her lack of desire to eat, restlessness, and her gasping labored, breaths, known as euthanasia ,she knows the physiological death is near.

Euthanasia is the practice of intentionally ending life to relieve pain and suffering. Different countries have different euthanasia laws. Some people fear that allowing euthanasia sends the message, "it's better to be dead than sick or disabled". The subtext is that some lives are not worth living. Not only does this put the sick or disabled at risk, it also downgrades their status as human beings while they are alive.

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2 years ago
Javier was born 3 days ago. His parents have noticed that he has several reflexes that the doctors have been testing. Which of t
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3 years ago
Read 2 more answers
The heart is autorhythmic, which means it can generate its own action potential without outside nerve stimulation.
givi [52]

Answer:

a) True

Explanation:

The heart contains cardiac autorhythmic muscle cells, which are specialized cells that generate their own action potential without the need to receive it from nerve cells. These self-stimulated or self-excitable cells work together and function as the heart's natural pacemaker, which initiates an electric potential at a constant rate, and this potential travels through the heart triggering its contraction in an organized manner called the cardiac cycle.

These autorhythmic cells are found in the SA (sinoatrial) node in the right atrium of the heart, the AV (atrioventricular) node in between the atria and the ventricles, and in the fibers that connect these two nodes with each other and with the rest of the heart. All these structure working together is what's called the heart's electrical system.

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3 years ago
The ________________ releases hormones directly into the blood and the ________________ receives hormones from the hypothalamus
Radda [10]

The<u> neurohypophysis </u>releases hormones directly into the blood and the <u>adenohypophysis</u> receives hormones from the hypothalamus cells which in turn causes the release of more hormones.

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The hormones produced by the posterior pituitary are released into the bloodstream directly from the axonal terminals of their source neurons, this region of the pituitary is frequently referred to as neurohypophysis. Two peptide hormones, vasopressin, and oxytocin act as the structural base of a neuro-humoral system that coordinates fluid balance and reproductive function.

The anterior pituitary (or adenohypophysis), controls a number of physiological processes (including stress, growth, reproduction, and lactation). Melanocyte stimulating hormone is produced and secreted by the intermediate lobe.

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