On admission, a 12-lead ECG has been ordered. Which of the following options best describes the rationale for undertaking a 12-lead ECG in Mr Kwon’s situation?

Select one:
Stroke causes life-threatening ventricular fibrillation.
A 12-lead ECG is routinely prescribed for all patients presenting to hospital acutely unwell.
A 12-lead ECG directly examines cardiac output.
A 12-lead ECG will determine the existence of atrial fibrillation, which is a common and manageable risk factor for stroke in older people.

emma Norton, aged 26 is admitted to hospital with an acute exacerbation of her COPD

Using the knowledge of the respiratory system and the cardiovascular system, please answer the following questions below. Be sure to clearly label the different part

Part C

Emma’s COPD has caused pulmonary hypertension and subsequent failure of the right ventricle. What are the roles of the venous pressure and capillary hydrostatic pressure causing edema

Part D

Emma right ventricular failure has cause decrease in cardiac output. Explain which hormonal system will be activated and how it compensates for this

Physiologist discover a new disease affecting neuromuscular transmission at the neuromuscular junction NMJ. They called the condition PLT disease and it causes weakness and increasing fatigue in the skeletal muscles, due to the production of antibodies that target membrane bound receptors of the skeletal muscle cells

Part A

How will the antibodies produced in PLT disease affect neuromuscular transmission? Identify the specific receptors on the skeletal muscle cells that will target these antibodies and the neurotransmitters involved

Part B

The physiologists decide to treat the PLT disease with a class of drug that enhances cholinergic transmission at the neuromuscular junction.

Explain why enhancing the cholinergic transmission at the NMJ is a suitable treatment for PLT disease which causes skeletal muscle weakness.

Response should include detailed explanation of the events involved in cholinergic transmission, the role of cholinesterase in normal NMJ physiology, specific action of anticholinesterases on cholinesterase, and how anticholinesterase will affect skeletal muscle contraction.

At puberty, FSH and LH

Factors that might influence recent changes in the age at which puberty begins include

Dr. West loves to drink caffeinated coffee. She knows that caffeine makes her feel awake by

List the similarities and differences of the layers of the epidermis.

The demands of exercise necessitate numerous physiological changes in animals, especially in circulation and muscle metabolism. Consider prolonged exercise activity (e.g. long-distance migration or a marathon run in human exercise).

1. Describe the changing demands in muscle metabolism as exercise progresses (from seconds to minutes to hours). How will the fuel used by locomotory muscles change?
2. Describe the associated changes in respiration and circulation in order to meet the increased demand of skeletal muscle. What specific changes in cardiac output and capillaries at the muscle bed take place, and how are these regulated?

During the crossbridge cycle of skeletal muscle contraction, the binding of adenosine triphosphate (ATP) to the globular myosin head first causes which of the following? Select one: a. Movement of tropomyosin to expose the myosin binding site on the actin molecule b. Myosin head to bind to actin c. Myosin head to detach from actin d. Myosin head to swing forward pulling actin toward the M-line e. Myosin head to be cocked into its high-energy state

Which signals sent through the central nervous system travel faster than others? Is there a particular hormone that intrigues or fascinates you? Which one(s)? Why?

• State the main digestive roles of the liver, pancreas, and gallbladder
• Identify three main features of liver histology that are critical to its function
• Discuss the composition and function of bile
• Identify the major types of enzymes and buffers present in pancreatic juice

• Label on a diagram the four main regions of the stomach, its curvatures, and its sphincter
• Identify the four main types of secreting cells in gastric glands, and their important products
• Explain why the stomach does not digest itself
• Describe the mechanical and chemical digestion of food entering the stomach

What prevents the female body from rejecting the embryo/fetus, as this is a new tissue developing in her body that is genetically different from her own tissues?