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BIOL 102

I need new and unique answers, please. (Use your own words, don't copy and paste)

Pllleeeeasssse i need more than 500 words please ...*****

Choose any system of the human body (respiratory system) and prepare a response to the following questions in 1-2 pages:
1. Introduction (Explain the system with the components)

2. Body (Explain how the system relates to achieve homeostasis in human body)

3. Conclusion (Choose any disease common in Kingdom of Saudi Arabia and explain how and which part of the system is affected)

1:

A. You are jogging and your lower limbs are constantly sending

sensory position/proprioceptive info to your cerebellum, and

your cerebellum is sending output to your primary motor cortex,

which then modifies your Lateral Corticospinal tract.

This makes a spinal cord-cerebellum-cerebrum-spinal cord“loop” to control your leg muscles.

List all the structures, tracts, nuclei, decussations, cells, etc to describe this loop. Start with afferent spinal nerves from the legs.

B.

You are on the field, about to kick the winning field goal in the big football game!

Your brain makes a motor “plan” and sends this info into the cerebellum, which then sends output to the LCT to coordinate the muscles of

your Right leg. List all the structures, tracts, nuclei, decussations, cells, etc to describe this cerebrum-cerebellum-cerebrum loop. Start with the Left Prefrontal cortex.

How are identical twins formed? What causes some identical twins to have different placental and amnion? What causes some identical twins to share amnion but not placental?

Describe Frank-Starlings Law of the heart in words and on a graph and identify if it is an intrinsic or extrinsic control mechanism.

Describe and/or diagram the mechanism that regulates intracellular Ca+2 during excitation-contraction coupling in cardiomyocytes.

In words and on a graph, diagram the fast response action potential of a cardiomyocyte. Indicate which voltage-gated channels are open or closed at each respective phase (0-4) and the direction the ions are moving.

Describe how arterioles control blood flow through intrinsic and extrinsic signaling mechanisms. Plot and describe reactive and active hyperemia.

Describe the embryological development of the lungs. 500 words.

Compare contrast the four different types of heart pumps in terms of driver, flow, indication, advantages and disadvantages.

Explain to Matt why it is more important to improve the quality (type) of fat he consumes rather than lowering the amount of fat he consumes to reduce his risk for developing cardiovascular disease.

The inhalation and exhalation are two characteristics of the respiratory function.

Write an essay in which you clarify the concept of ventilation versus respiration, and explain the characteristics of inspiration and expiration in terms of involved organs and the forces triggering them. (Don’t exceed 800 words.)

The knowledge of muscles and pressures involved in the respiration is fundamental to write this essay.

How are the functions of the accessory digestive organs similar in a shark and mudpuppy?

1. Explain the full mechanism by which our heart pumps blood to the rest of the body including the specific role of phosphatidylinositol plays in calcium sequestration, starting from a signaling molecule. Keep in mind that the heart is a muscle which contracts and relaxes. (10-points)

Your friend tests her snake-wrangling skills on an eastern diamondback rattlesnake and is bitten and injected with venom. In the emergency department, doctors administer the anti-venom (antivenin) CroFab, which contains antibodies to the toxins in the snake venom. Is this an example of active or passive immunity? (explain why). Will this result in long term protection against future rattlesnake bites? Explain.  

Summarize the sources, stimulus for, and effects of these hormones: atrial naturetic factor, angiotensin II, antidiuretic hormone.