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Human Anatomy and Physiology

Human physiology is the study of the human body relevant to the functions of the organs and systems. It provides a biological baseline for the five senses including the different systems, so that the body can operate normally.

500 Questions

Can you break the tip of your finger?

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Asked by Wiki User

No.You cannot.You can bruise it but cannot break it.

Yes you can because that is what i broke. I had two pins inserted as well.

What is the size of the cerebrum?

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Asked by Wiki User

the size of it is 679879234834 cm

Is the dermis made of mostly dead cells?

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Asked by Wiki User

No, the epidermis is made up of mostly dead cells

How does the body turn food into energy?

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Asked by Wiki User

food is oxidized meaning it reacts with oxygen and CO2, H2O and energy in the form ATP is produced

What is homeostatic mechanism?

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Asked by Awinchester

A homeostatic mechanism is the property of a system, either open or closed, that regulates its internal environment and tends to maintain a stable, constant condition. For example: the hypothalamus (which is a homeostatic mechanism) senses when your body's temperature is too high or too low. In a situation where the temperature of your body is above normal, the hypothalamus senses that a change needs to be made in order to reverse the heating of the area and reduce the amount of blood that is sent to the location. In turn this action will cool the body and return it to the normal temperature in which it should be maintained.

Where is axon located?

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Asked by Wiki User

The axon is locaed i the anterior horn on the spinal cord The axon is locaed in the anterior horn on the spinal cord

How often should a normal healthy person urinate --- pee--- in a day?

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Asked by Wiki User

You should take in atleast 2000-2500 ml of water a day to maintain healthy fluid balance in the body. You normally urinate about 1500 ml of that.

What does the body look like?

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Asked by Wiki User

There is the head at the top.

Then there is the body.

Then there is the penis in the scrotum bag. this is what you use for sexual intercourse (you insert it into the womans va

What are the two general modes of hormone action?

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Asked by Wiki User

Lipid-soluble hormones are able to penetrate through the cell membrane and bind to receptors located inside the cell. Such hormones diffuse across the plasma membrane and target those receptor cells found within the cytoplasm. Lipid-soluble hormones target the cytoplasmic receptors which readily diffuse into the nucleus and act on the DNA, inhibiting and stimulating certain proteins. lipid-insoluble are unable to penetrate through the plasma membrane and function with their target cells in a much different and complex manner. Lipid-insoluble hormones must bind with cell-surface receptors which follow a different path involving a second messenger. The hormone's inability to penetrate the membrane requires a second messenger which translates the outer message and functions within the cell.

What is tissue fluid?

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Asked by Wiki User

Tissue fluid is the the fluid that surrounds the bodies cells, or technically it "bathes" the cells in the body or cleans them.

What do you call the heat of the body?

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Asked by Wiki User

Corporal (or body) temperature. When it is above normal, it is called hyperthermia or fever and when it is below normal is called hypothermia.

Which hand is the best right or left?

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Asked by Wiki User

There is NO best right or left hand.

It is a question of genes and how they put together.

90% of the world population is right handed, and consequently tools and many other facets of everyday life are pitched towards right handed people.

The of other 10% of the world is left handed, and I am oner of them.

However there are degrees of chirality (handedness) . No one person is totally right handed or left handed.

A normally right handed person may do something that is normally done by a left hander. and vice versa.

I am 96% left handed. I write, kick, brush , bat, etc., as a left hander. However, occasionally I might have to use my right hand when using a screwdriver.

The outward turn of the hand/arm is weaker than an inward turn.

Also in your handedness, you may find one eye is stronger than the other, similarly, ears, and the side you chew on .

The brain lobes, which control your thought processes, show that right handers are better at certain things , and left handers are better at other things , notably art, music, mathematics.

From Medieval French heraldry , right is 'dexter' and left is 'sinister', so I consider myself as a 'Sinister 'person.

Casually, left handers are often referred to as 'gauche', cack handed, gammy handed, or other silly/daft names.

As a sinister person, together with other left handers , we consider ourselves to be the best part of the world, because we are different. Ha!!! Ha!!!

So there you have it!!! I hope that helps!! . There is no BEST side!!!!!

What muscle fiber type helps a sprinter get out of the blocks fast?

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Asked by Wiki User

Pasta is usually good for energy, stamina etc. However, for me personally I had to have the gluten free alternative which I don't think was quite as effective personally.

What occurs during a primary immune response and secondary immune response?

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Asked by Chichismithgp9871

The secondary immune response occurs after an antigen that has already been encountered reappears.

For example, if someone had recovered from the flu and later encounters the

same strain of that virus, antibodies that were made specifically for that antigen will rise dramatically with almost no lag perod.

What is the function and importance of the reproductive system?

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Asked by Wiki User

teretettetetetet hahhahahaahhahaha vbabababababba cacacacacac dadadadadada eefeffefefeefef

If a person is having a problem with balance what part would most likely be the cause?

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Asked by Wiki User

Balance problems, or vertigo, are caused by a conflict between what is seen and how the inner ear perceives it, leading to confusion in the brain.

What effects of proteins to your body?

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Asked by Wiki User

Protein Benefits to Life

What are the benefits of proteins to life?

Structural support: Proteins serve as the building blocks of cells, tissues, and organs. They provide structural support, maintaining the shape and integrity of various biological structures. For example, collagen is a protein that forms the framework of connective tissues, including skin, tendons, and bones.

Enzymatic activity: Many proteins function as enzymes, which are biological catalysts that facilitate biochemical reactions in the body. Enzymes accelerate chemical reactions, allowing them to occur at a suitable rate for cellular processes such as digestion, metabolism, and DNA replication. Without enzymes, vital biochemical reactions would be too slow to sustain life.

Transport and storage: Certain proteins, such as hemoglobin, are responsible for transporting essential molecules throughout the body. Hemoglobin, found in red blood cells, carries oxygen from the lungs to tissues and helps transport carbon dioxide back to the lungs for elimination. Proteins can also store molecules like iron and oxygen in muscles and other tissues until they are needed.

Immune function: Proteins play a crucial role in the immune system. Antibodies, which are specialized proteins, recognize and bind to foreign substances such as bacteria, viruses, or toxins, marking them for destruction by other immune cells. Additionally, proteins called cytokines regulate immune responses and help coordinate the body's defense mechanisms.

Hormones and signaling: Certain proteins, such as insulin and growth hormones, act as chemical messengers in the body, regulating various physiological processes. Hormones help control metabolism, growth, development, and other essential functions by binding to specific receptors on target cells and triggering specific responses.

Muscle contraction: Proteins, particularly actin and myosin, are responsible for muscle contraction and movement. When these proteins interact, they generate the force required for muscle contractions, allowing us to move, maintain posture, and perform physical activities.

Repair and maintenance: Proteins are involved in the repair and maintenance of tissues and cells. They help in the synthesis of new cells and the replacement of damaged or worn-out proteins. Collagen, once again, is an example of a protein that aids in tissue repair, as it forms scar tissue during the healing process.

pH regulation and buffering: Some proteins act as buffers, helping to maintain the pH balance in the body's fluids. They prevent excessive changes in pH, which is essential for optimal functioning of enzymes and other biological processes.

These are just a few examples of the many vital roles proteins play in sustaining life. Without proteins, the intricate processes that occur within living organisms would not be possible.

What are 3 ways in which endocrine glands are stimulated to secrete their hormones?

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Asked by Wiki User

Other hormones - hormones that stimulate the secretion of other hormones from endocrine glands are called tropic hormones. An example of this would be the secretion of human gonadotropin releasing hormone (GnRH) by the hypothalamus. This hormone stimulates the anterior pituitary to secrete follicle stimulating hormone (F SH) and luteurizing hormone (LH), two hormones particularly important in menstruation.

Nerve impulse conduction - when a nerve impulse reaches the end of the nerve axon, neurotransmitters are released. In many cases, these neurotransmitters can act as endocrine hormones. For example, in order to stimulate muscle contraction, a nerve impulse that reaches the axon of a nerve that directly contacts a muscle (i.e. a motor neuron), will stimulate the release of acetylcholine. The acetylcholine binds receptors on the muscle and it contracts.

Changes in concentration of extracellular ions or nutrients - many cells have molecules that can act as sensors of the extracellular environment, and changes in this environment can stimulate them to secrete hormones. A common example of this is the secretion of insulin or glucagon. If glucose concentration in the blood is high, insulin is secretes. If blood glucose is low, glucagon is secreted.

In addition, many hormones can be secreted in response to environmental stimuli like a change in heat or light. Often times this secretion is indirect and utilizes one of the previous mentioned mechanisms. However one example of a direct affect of the environment is the hormone melatonin. Melatonin helps regulate sleep/wake cycles and is produced by the pineal gland when directly stimulated by darkness (i.e. night)
hormonal humeral neural

Why Is It Important That Adrenaline Be Broken Down Very Quickly In What if your Body?

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Asked by Wiki User

it can overwork the muscles and so its important to let the body return to normal once the "event" has passed.