1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
elixir [45]
3 years ago
8

What is the cause of bone fusion in joints damaged by rheumatoid arthritis?

Medicine
1 answer:
Oliga [24]3 years ago
4 0

Answer:

The cause of bone fusion in joints damaged by rheumatoid arthritis is due to the over activity of the synovium.

Explanation:

Synovium -

Synovium is a lining that covers the joints of the body , which is responsible for lubrication of the joints and to move easily .

The disorder rheumatoid arthritis is caused by the over activity of this lining , as it swells out and becomes inflamed , and hence, can destroy the joint and even the ligament and the tissues .

The weakening of these ligament can lead to deformities like claw toe or hammer toe.

You might be interested in
The hormone that induces ovulation in women and promotes the ovarian secretion of progesterone is
Mnenie [13.5K]

Answer:

luteinizing hormone (the 'LH surge')

Explanation:

this LH surge causes the dominant follicle to rupture and release the mature egg from the ovary.

4 0
3 years ago
Read 2 more answers
Explain how neurons communicate. Include a description of the action potential and how the action potential is converted into a
suter [353]

Answer:

Action potentials and chemical neurotransmitters.

Explanation:

Neurons communicate with each other via electrical events called ‘action potentials’ and chemical neurotransmitters.  At the junction between two neurons (synapse), an action potential causes neuron A to release a chemical neurotransmitter.  The neurotransmitter can either help (excite) or hinder (inhibit) neuron B from firing its own action potential.

In an intact brain, the balance of hundreds of excitatory and inhibitory inputs to a neuron determines whether an action potential will result.  Neurons are essentially electrical devices. There are many channels sitting in the cell membrane (the boundary between a cell’s inside and outside) that allow positive or negative ions to flow into and out of the cell.  Normally, the inside of the cell is more negative than the outside; neuroscientists say that the inside is around -70 mV with respect to the outside, or that the cell’s resting membrane potential is -70 mV.

This membrane potential isn’t static. It’s constantly going up and down, depending mostly on the inputs coming from the axons of other neurons. Some inputs make the neuron’s membrane potential become more positive (or less negative, e.g. from -70 mV to -65 mV), and others do the opposite.

These are respectively termed excitatory and inhibitory inputs, as they promote or inhibit the generation of action potentials (the reason some inputs are excitatory and others inhibitory is that different types of neuron release different neurotransmitters; the neurotransmitter used by a neuron determines its effect).

Action potentials are the fundamental units of communication between neurons and occur when the sum total of all of the excitatory and inhibitory inputs makes the neuron’s membrane potential reach around -50 mV (see diagram), a value called the action potential threshold.  Neuroscientists often refer to action potentials as ‘spikes’, or say a neuron has ‘fired a spike’ or ‘spiked’. The term is a reference to the shape of an action potential as recorded using sensitive electrical equipment.

Neurons talk to each other across synapses. When an action potential reaches the presynaptic terminal, it causes neurotransmitter to be released from the neuron into the synaptic cleft, a 20–40nm gap between the presynaptic axon terminal and the postsynaptic dendrite (often a spine).

After travelling across the synaptic cleft, the transmitter will attach to neurotransmitter receptors on the postsynaptic side, and depending on the neurotransmitter released (which is dependent on the type of neuron releasing it), particular positive (e.g. Na+, K+, Ca+) or negative ions (e.g. Cl-) will travel through channels that span the membrane.

Synapses can be thought of as converting an electrical signal (the action potential) into a chemical signal in the form of neurotransmitter release, and then, upon binding of the transmitter to the postsynaptic receptor, switching the signal back again into an electrical form, as charged ions flow into or out of the postsynaptic neuron.

4 0
3 years ago
Chen is trying to determine why he usually skips breakfast. He writes the following notes in his journal:
Darina [25.2K]

Answer:

Yes breakfast does have the energy that you need throughout the day for example i have skipped breakfast and i was very tired throughout the day. you should eat breakfast as a necessity every single day

Explanation:

6 0
3 years ago
Read 2 more answers
Which of the following drugs is not an opiate? quizlet
soldi70 [24.7K]

Answer:

Missing drug list. Inbox me please. Thank you

Explanation:

6 0
2 years ago
A primary comparative distinction between skilled-nursing and assisted-living facilities is that skilled nursing facilities:
KatRina [158]

Answer:

Difference between skilled nursing and assisted living

Overall, the main difference between nursing home care and assisted living is that nursing homes provide medical and personal care in a clinical setting, while assisted living primarily provides personal care in a home-like, social setting.

5 0
2 years ago
Other questions:
  • In a healthy kidney, very little __________ is filtered by the glomerulus
    15·1 answer
  • If u have been constantly vomiting what do u do to stop it?
    5·1 answer
  • Someone asked me what are the chances karen would win a stuffed animal from the machines.. i replied with this
    6·2 answers
  • Mora is a pharmacy technician. She is filling a prescription that states disp 12cc and qsad with water to 15cc. What actions sho
    7·1 answer
  • What is an Endocrinologist? What does an Endocrinologist do?.
    10·1 answer
  • What was the first pills ever to come out <br> who ever answers this will get 50 points
    10·1 answer
  • A baby is born with crossed eyes; the doctor suggests surgery to alleviate the problem, which muscles will be cut
    13·1 answer
  • explain why a tan isn't really healthy after all and actually increases your odds of developing skin cancer
    12·1 answer
  • Which is the best medical college in India not in too much high fee
    7·2 answers
  • A client with tuberculosis is being started on antituberculosis therapy with isoniazid. Before giving the client the first dose,
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!