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choli [55]
3 years ago
6

Why do humans blink?

Health
2 answers:
Kamila [148]3 years ago
4 0
Blinking keeps your eyes safe from damaging
luda_lava [24]3 years ago
4 0
To keep you eyes from drying out
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4th one should be the correct answer if I am not mistaken
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I need to know the names of these
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Working muscles harder for longer periods without getting tired is _____________.
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According to the text, each year we spend in the United States approximately __________ on health care for either specialty serv
Strike441 [17]

Answer:

Public health spending in the United States decreased 2,849 million in 2018, that is, 4.42%, to 2,484,593.3 million euros, representing 39.46% of total public spending. This figure assumes that public spending on health in 2018 will have 14.32% of GDP, a drop of 0.1 points compared to 2017, when spending was 14.42% of GDP.

In 2018, the United States is considered in the same position in the ranking of countries by amount invested in health, in the first place on the list, that is, it is the country that invests most in health. Regarding its repetitive relation to GDP, it has maintained its position in the first position of the list, since it is the country that spends the most in health with respect to its GDP.

In reference to the percentage that the investment in health supposes with respect to the governmental budget, the United States is in the first position.

In 2018, public spending per capita on healthcare in the United States was 7,577 euros per capita. In 2017 it was 7,637 euros, then fell 0.79%, 60 euros per person. Currently, according to its public expenditure on health per capita, the United States is at the top of the list, which means that it is the country that invests most in health per capita.

3 0
3 years ago
Identify, define and break down 10 medical terms related to the nervous system.
lutik1710 [3]
Axons are long nerve processes which carry nerve impulses from the Soma to other neurons, they vary in length but can become almost as long as half of the human body.

The soma (body) of the neuron contains the nucleus which acts as the cell's control centre, these contain many small neurofibrils which project from the nucleus into the dendrites.

Dendrites are short, thick processes which branch out of the soma in a tree like manor. They conduct nerve impulses to the soma.
The three categories of neurons:

Afferent (Sensory) Neurons have the dendrites connected to receptors such as the eyes, ears etc. These receptors change the information they receive into electrical impulses that are transmitted to other neurons. In sensory neurons the axons are connected to other neurons.

Efferent (Motor) Neurons have the dendrites connected to other neurons, the axons are connected to effectors. Effectors are either glands or a muscle cell that is the receiving end of the nerve impulse. The nerve, when excited will cause the effector to react (move, contract, or secrete etc).

Internuncial Neurons have both the dendrites and the axons are connected to other neurons. They are sometimes referred to as connector neurons.
Internuncial neurons are found throughout the body, but especially in the spinal cord and brain.

Properties and characteristics of Neurons:
Normally the electrical impulses (messages) travel through a neuron in only one direction.

The axon may be surrounded by a 'coat' of lipids (fats) and proteins known as the myelin sheath which acts as an insulator.

Neurons are specialist cells that have lost the ability to reproduce themselves. Once the soma of a neuron has died the entire neuron dies, and can never be replaced.
Repair of damaged neurons only occurs in myelinated neurons.

white matter are coloured by myelin, consisting of many neurons supported by neuroglia.
grey matter is soma and dendrites or bundles of unmyelinated axons and neuralgia.
8 0
3 years ago
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