Think of five everyday movements (example: snatching a foot)

For each, indicate the movement, the bones involved, the joints involved, and the type of joint movements

1)   What are the three layers of the heart? Briefly describe the three layers of the heart.
2)   Describe the pathway of blood from the heart to the lungs (Pulmonary Circulation) and from the heart to the different bodily tissues (Systemic Circulation) and back to the heart
a.   You must include all the chambers of the heart (Atria and Ventricles), all the valves (ex. Tricuspid Valve, etc.), and all the necessary vessels (ex. Pulmonary Artery, Inferior Vena cava, etc.)

1) What are the major lymphatic organs/vessels?

2) Briefly describe how you would have performed the heart dissection as if you were to do it in class. What are major structures you can see?

pick one of the following locations:

The right pinky finger

The mesentery

The left breast

The posterior left knee

Describe the formation of lymph within that region, relating that to blood vessels within the region and addressing the physical forces that lead to lymph production. How would the lymph that is formed in that region be returned to the blood supply? What vessels and lymph organs would it travel through? Also, imagine that there is a potential pathogen within your identified region - what involvement of other lymph organs or individual immune cells would you expect?

Full description of the structural changes in the brain including the gray and white matter, limbic system and prefrontal cortex during adolescence

Compare and contrast the excitation-contraction coupling mechanisms of skeletal muscle versus contractile cardiac muscle.

Need detailed answers please.

Explain why there is an absence of electrical activity between the following on an ECG:

1. between the P wave and the Q wave

2. between the S wave and the T wave

Need detailed answers please.
Explain multiple mechanisms for how a tissue that has increased metabolic activity will gain increased blood flow.
Compare and contrast the excitation-contraction coupling mechanisms of skeletal muscle versus contractile cardiac muscle.

Explain multiple mechanisms for how a tissue that has increased metabolic activity will gain increased blood flow.

Need detailed answers please.

Why doesn't the maximal membrane voltage (at the peak of the action potential) change with altered potassium?

What happens to the resting membrane potential in hyperkalemia?

What happens to the firing rate in hyperkalemia?

Explain.

Thank you!

what's the peptide pathway of the Neuropeptide y (NPY) and design a theoretical drug that activates the same receptors of that peptide

1. What would happen if there were a blockage to voltage-gated Na⁺ channels during an action potential?

2. What would occur to an action potential if there was delayed inactivation of voltage-gated Na⁺ channels?

3. What would happen to an action potential when a toxin prevents ACh binding to nAChRs on muscle fibres?

4. What would happen to an action potential if a toxin which forms pores in the cell membrane of neurons, allowing the influx of Ca²⁺ into the nerve terminal

Endocrine function of the pancreas include which of the following?

what will most likely to happen to dipeptides and tripeptides.

Amylase is an enzyme involved in the hydrolysis of foods such as

1. which of the following takes place in the small intestine?

   		digestion of pepsin, trpsin and chymotrypsin
   		digestion by trypsin and chymotrypsin
   		digestion by salivary amylase and carboxypeptidases
   		digestion of proteins on a whole.

This process is mostly involved in the mixing of food in the small intestine.

Which of the following is NOT one of the functions of the pancreas?

Please help me answer this questions

How do pacemaker cells generate a rhythmic action potential? What makes them autorhythmic?