Category: Uncategorized

The role of the lymphatic system-blood pressure is lowest

1. The buildup of plaque in the walls of arteries and the narrowing of passages through which blood can flow results in

A) Anemia
B) leukemia
C) atherosclerosis
D) cancer

2. White blood cells play an important role in

A) carrying oxygen
B) fighting infections
C) blood clotting
D) hemoglobin transport

3. Which of the following can cause anemia?

A) mineral deficiency
B) some types of cancer
C) excessive blood loss
D) A & B
E) A, B & C

4. Plasma consists mostly of

A) white blood cells
B) red blood cells
C) dissolved salts such as sodium
D) water

5. Which of the following is correct for a blood pressure reading of 120/80?

A) the systolic pressure is 80; the diastolic pressure is 120
B) the systolic pressure is 120; the diastolic pressure is 80
C) the diastolic pressure is 120; pulse is 80 beats per minute
D) the systolic pressure is 80; pulse is 120 beats per minute

6. Blood pressure is lowest in

A) capillaries
B) arteries
C) veins
D) arterioles

7. Briefly explain how the structure of capillary walls is well suited to function. [2 pts]

8. Damage to the SA (sinoatrial) node in humans

A) is a major contributor to heart attacks
B) would disrupt the normal rhythm cardiac contractions
C) results in a terminal disease
D) would result in oxygen poor blood

9. The circulation system in humans and other mammals is referred to as a “double circulation system”. This term refers to

A) the presence of two hearts
B) the presence of four heart chambers
C) the pulmonary circuit
D) the systemic circuit
E) the pulmonary and systemic circuits

10. Which of the following would be the correct path of blood flow as it returns from the lungs, flows through the heart and toward the body?

A) pulmonary vein → left atrium → left ventricle → aorta
B) pulmonary vein → right atrium → right ventricle → aorta
C) pulmonary artery → left atrium → left ventricle → aorta
D) pulmonary artery → right atrium → right ventricle → aorta

11. The role of the lymphatic system is to

A) fight infection in the body only
B) return tissue fluid to the circulatory system only
C) produce hormones that regulate the immune system
D) fight infection in the body and return tissue fluid to the circulatory system
E) fight infection in the body and produce hormones that regulate the immune system

12. Which of the following play a role in preventing infection?

A) healthy skin
B) mucus membranes such as those found in the respiratory tract
C) tears
D) A & B
E) A, B & C

Describe the various types of information

Describe the various types of information that epidemiologists use to detect, interrupt and prevent epidemics. List the possible mechanisms of transmission and reservoirs of infection.

Write a short essay about birth control pill

Write a short essay about birth control pill.

Write an essay on the pre-determined questions listed below. Reading link(s) that provide background information for question have been provided. Do not limit your reading to the links provided. You will find it helpful to read other related material to answer the question. Answering a question will require that you provide objective, biologically based information in addition to your subjective views. All subjective viewpoints are welcome. However, keep in mind that there is no place for inflammatory language in this forum. Make sure to use good grammar, introduction, conclusion and clearly organize your thoughts. For your essay double-spaced, use a 12-point font with one-inch margins and do not exceed two pages (single-sided).

Question: Generally, describe how female birth control pills work. In your opinion should access to birth control pills be increased or decreased? What risks are associated with the use of birth control pills and how do these risks compare to those associated with pregnancy? Explain.

http://www.hhs.gov/opa/reproductive-health/contraception/birth-control-pills/

Describes two functions of dna

1. Word paper that describes two functions of DNA and explains how DNA’s structure allows it to fulfill these functions. Include the following in your answer:

o Structure of a nucleotide
o Base-pair rules
o Process of replication, including enzyme function
o RNA structure
o Process of transcription
o Translation
o Codons and anticodons

2. Explain how knowledge of DNA and technology is being used today to do things that we could not have done 50 years ago. Address how control of gene expression affects biotechnology.

Evaluate quality of evidence for evolutionary interpretation

Deviations from the environment to which we are adapted have been used to explain a large variety of conditions, including sudden infant death syndrome (SIDS), the persistent crying known as colic, lower back pain, drug addiction, and depression. Consult the scientific literature for details on one such condition and then evaluate the quality of evidence for an evolutionary interpretation of the condition.

Describe events that must occur to generate action potential

Describe the events that must occur to generate an action potential. Indicate how the ionic gates are controlled, explain why the action potential is an all-or-none phenomenon.

Purpose of teaching motivation skills to managers

What is the purpose of teaching motivation skills to managers? Should managers learn these skills so they can help employees reach their potential? Or are we teaching these skills to managers so they can more effectively manipulate their employees’ behavior? What do you think?

: how stress can lead you to depression

news article: how stress can lead you to depression

write a detailed news article using the 5 w’s and one H

Describe receptive fields in the retina

Retinal vision A. Discuss the molecular mechanisms on how a photoreceptor relays a signal to the bipolar cells B. Explain receptive fields in the retina and how they are relayed to the brain. C. What is dark and light adaptation? Central vision A. Describe the circuitry that allows us to have binocular vision. Make sure you include the proper neuronal layer in the striate cortex. B. Explain the organization of ocular dominance columns and how scientists learned about them. C. Explain the differences among the parvocellular, magnocellular, and koniocellular pathways.

Differences between the terms nutrition and health

What are the similarities and differences between the terms nutrition and health?

Show at least one positive and one negative effect that diet and nutrition can have on digestion and absorption.

Give an example of a disorder of digestion and absorption that can adversely affect nutritional status and health.