mlO2/dLblood = (gHb/dLblood) * (%sat/100) * (1.34 mlO2/dLblood)
Given 16gHb/dL and saturation of 92%, what is the ml of oxygen in the blood?

1.Natural selection operates at the population level while evolution operates on individuals. True or False

2. Because mules (a cross between a horse and a donkey) are sterile, they cannot be considered a species. True or False

3.Transposable elements are DNA sequences that a. can copy themselves into entirely new areas of the chromosomes. b. occur only on the X and Y chromosomes. c. contain numerous point mutations. d. are not coded to produce proteins.

a)You are walking through your living room when you step on a Lego.  Briefly describe the process of sensing and responding to this painful stimulus.  Be very specific about the efferent pathway that will be involved in your response. Include nervous system division, a neurotransmitter(s) that will be utilized and stimulation of effector(s).

b)You have just eaten a large Thanksgiving meal and are relaxing on the couch enjoying the holiday with your family.  Briefly describe the process of sensing and responding to these stimuli.  Be very specific about the efferent pathway that will be involved in your response.  Include nervous system division, a neurotransmitter(s) that will be utilized and stimulation of effector(s).

Describe a spinal reflex. In your answer use the following terms: Somatic motor neuron, sensory neuron, ascending signal, thalmus, sensory cortex.

QUESTION 1

1. Blood flows:

   		from the common iliac vein to the inferior vena cava to the heart
   		from the heart to the inferior vena cava to the common iliac vein

QUESTION 2

1. Blood flows:

   		from the heart to the superior vena cava to the head
   		from the head to the superior vena cava to the heart

QUESTION 3

1. Blood flows:

   		from both the renal veins and the external iliac veins separately to the inferior vena cava
   		from the external iliac veins to the renal veins to the inferior vena cava

QUESTION 4

1. Blood flows:

   		from the aortic trunk to the common carotid artery to the head
   		from the head to the common carotid artery to the aortic trunk

QUESTION 5

1. Blood flows:

   		from the aorta to the celiac trunk to the hepatic arteries to the liver
   		from the liver to the hepatic arteries to the celiac trunk to the aorta

QUESTION 6

1. Blood flows:

   		from the aorta to the bronchial arteries to the lungs
   		from the lungs to the bronchial arteries to the aorta

QUESTION 7

1. Blood flows;

   		from the common iliac artery to the aorta
   		from the aorta to the common iliac artery

QUESTION 8

1. Blood flows:

   		from the aortic arch to the brachiocephalic trunk to the left subclavian artery
   		from the aortic arch to both the brachiocephalic trunk and the left subclavian artery separately

QUESTION 9

1. Blood flows:

   		from the inferior vena cava to the hepatic vein to the hepatic portal vein
   		from the hepatic portal vein to the hepatic vein to the inferior vena cava

QUESTION 10

1. Blood in medium-sized arteries flows next to:

   		smaller arteries
   		larger arteries

•Hydrogen bonding between water molecules is essential for lung expansion to occur, but also increases resistance during inspiration. Explain this contrast by describing the locations and how hydrogen bonding plays a positive and negative role in ventilation.

•Draw a diagram of the lung to show these opposing forces

•What would happen if intrapleural pressure(IPP) equaled atmospheric pressure (AtmP)?

•How could this happen?

5. Follow the intrinsic conduction pathway and describe how the remaining 99% of the cardiac cells are stimulated. How is the action potential in the intrinsic cells different from the action potential in the contractile cells?

Explain how cancer cells use the lymphatic system to metastasize to other organs.

Based on your understanding of barrier defenses, explain why large coverage burns are often so fatal.

Describe at least FOUR processes in neurons and/or myocytes (muscle cells: skeletal, smooth, & cardiac) in which Calcium Ions (Ca++) function as important intracellular secondary messengers. Diagram how calcium exerts its effect on cells in each of these cases (what molecules does it act upon, and what is the result?).

Which tissue type lines the intestinal tract? What accessory structures significantly increases the surface area of this epithelium?

Which tissue type would you expect to find lining the alveoli of the lungs? Why?

Which tissue type would you expect to observe cushioning, protecting and insulating the viscera in the abdominal cavity?

What is the mechanism of glomerular filtration & what are the different pressures that affect it?

1. Discuss the prevalence of "lifestyle-related chronic disease".
2. A core component of lifestyle medicine is the use of evidence-based research. Discuss the importance of using only evidence-based research to inform therapeutic approaches.
3. How would you describe the field of lifestyle medicine and its importance, to someone who had never heard of "lifestyle medicine"?

Please Use your keyboard (Don't use handwriting) Thank you..

Courses Name: Introduction to Anatomy and Physiology BIOL102

yeeees .. For HUMAN CIRCULATORY SYSTEM

please re-write my answer by (Use your own words, don't copy and paste)

Q) Choose any system of the human body 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 KSA and explain how and which part of the system is affected)

***Please i need 500 words ..

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

_____________

please re-write my answer by (Use your own words, don't copy and paste)

My answer

HUMAN CIRCULATORY SYSTEM

Human circulatory system is responsible for flow of blood , nutrients , oxygen and other gases , hormones and drugs to and from cells . It consist of heart , blood , lungs, arteries , veins , capillary , coronary and portal vessels.

Heart: It is a muscular organ and is located behind and slightly left of breast bone of rib cage . It contains four Chambers , two atria and two ventricles. It pumps blood through the network of arteries and veins called the cardiovascular system.

Lungs: pulmonary arteries carry deoxygenated blood to the lungs , where carbon dioxide is released and oxygen picked up during respiration.

Veins: They carry deoxygenated blood from all parts of body to heart .

Arteries: They carry oxygenated blood from heart to all parts of body.

Portal vessels: carry blood from gastrointestinal tract , gall bladder , pancreas and spleen to liver.

Coronary vessels: coronary arteries supply oxygenated blood to the heart muscle . Coronary veins drain deoxygenated blood from it.

Capillary : They carry blood between arterioles and venules.

Blood: It is a body fluid that delivers necessary substances such as nutrients and oxygen to cells and transport metabolic waste away from cells.

Parasympathetic and sympathetic system control heart rate . Through these system body reacts to it's internal and external environments to change heart rate and maintain homeostasis .For instance take the case , when a person starts to exercise , body stops parasympathetic stimulation of heart , so the rate can increase , bring more oxygen and nutrients to muscles. As the exercise rate increases sympathetic system begin sending signals to the heart to raise rate even more. As a measure of maintaining homoeostasis increased rate of waste products are removed.

Respiratory diseases are one of the major diseases found in the inhabitants of Saudi Arabia. Asthma, lung cancer , tuberculosis ,chronic obstructive pulmonary disease are prevalent. Cardio vascular diseases like hyper tension and fluctuation in blood pressure are also prevalent.