SCI 221 Physiology Final Exam at Nightingale College
Access The Exact Questions for SCI 221 Physiology Final Exam at Nightingale College
💯 100% Pass Rate guaranteed
🗓️ Unlock for 1 Month
Rated 4.8/5 from over 1000+ reviews
- Unlimited Exact Practice Test Questions
- Trusted By 200 Million Students and Professors
What’s Included:
- Unlock 100 + Actual Exam Questions and Answers for SCI 221 Physiology Final Exam at Nightingale College on monthly basis
- Well-structured questions covering all topics, accompanied by organized images.
- Learn from mistakes with detailed answer explanations.
- Easy To understand explanations for all students.
Master your SCI 221 Physiology Final Exam certification journey with proven study materials and pass on your first try!
Free SCI 221 Physiology Final Exam at Nightingale College Questions
--------is used to determine the volume percentage of red blood cells in whole blood.
- A. Spectrin
- B. Hematocrit
- C. Hematopoiesis
- D. Hemocytometer
Explanation
Correct Answer Is:
B. HematocritExplanation
Hematocrit is the measurement used to determine the percentage of red blood cells in whole blood by volume. It is obtained by centrifuging a blood sample, which separates red blood cells from plasma. The proportion of packed red blood cells relative to the total blood volume provides important information about oxygen-carrying capacity and can help identify conditions such as anemia or dehydration.Which type of tissue has the greatest capacity to regenerate?
- A. Muscle
- B. Nervous
- C. Epithelial
- D. All of the above tissue have about equal ability to regenerate
Explanation
Correct Answer Is:
C. EpithelialExplanation
Epithelial tissue has the greatest regenerative capacity because its cells divide rapidly and are continuously replaced. This high turnover rate allows epithelial tissues to quickly repair damage caused by friction, injury, or exposure to environmental stress. Muscle tissue regenerates poorly, and nervous tissue has very limited regenerative ability, making epithelial tissue the most capable of regeneration.The hormone that causes the alveoli of the mammary glands to secrete milk is:
- A. Estrogen
- B. Oxytocin
- C. Prolactin
- D. Estrogen
Explanation
Correct Answer Is:
C. ProlactinExplanation
Prolactin is the hormone responsible for stimulating milk production in the alveoli of the mammary glands. It is secreted by the anterior pituitary gland and acts on mammary tissue after childbirth to initiate and maintain milk synthesis. Oxytocin causes milk ejection (let-down), estrogen promotes breast development, but neither directly stimulates milk secretion.The primary organ of the lymphatic system is the
- A. Thalamus
- B. Thyroid
- C. Thymus
- D. Spleen
Explanation
Correct Answer Is:
C. ThymusExplanation
The thymus is the primary lymphatic organ because it is where T lymphocytes mature and become immunocompetent. These cells are essential for adaptive immunity and cell-mediated immune responses. While the spleen is a major secondary lymphatic organ involved in blood filtration and immune responses, the thymus is considered primary due to its role in lymphocyte development. The thalamus and thyroid are not part of the lymphatic system.When the pressure in the lung is greater than atmospheric pressure:
- A. Inspiration occurs.
- B. Expiration occurs.
- C. Lung tissue has collapsed.
- D. The bronchioles are obstructed.
Explanation
Correct Answer Is:
B. Expiration occurs.Explanation
Expiration occurs when the pressure inside the lungs exceeds atmospheric pressure, causing air to flow out of the lungs. This pressure difference is created as the diaphragm and external intercostal muscles relax, decreasing thoracic volume and increasing intrapulmonary pressure. Air naturally moves from an area of higher pressure to lower pressure, resulting in exhalation.Which is not a function of epithelial tissue?
- A. Absorption
- B. Secretion
- C. Assimilation
- D. Protection
Explanation
Correct Answer Is:
C. AssimilationExplanation
Epithelial tissue functions primarily in protection, absorption, secretion, and filtration. It lines body surfaces, cavities, and organs, forming barriers that protect underlying tissues, absorb nutrients and fluids, and secrete substances such as enzymes, hormones, and mucus. Assimilation, which refers to the incorporation and utilization of nutrients at the cellular or metabolic level, is not a direct function of epithelial tissue but rather a function associated with cellular metabolism in other tissues.Positive-feedback control systems:
- A. Have no effect on the deviation from set point.
- B. Accelerate a change.
- C. Ignore a change.
- D. Do not exist in human systems.
Explanation
Correct Answer Is:
B. Accelerate a change.Explanation
Positive-feedback control systems amplify or accelerate a deviation from the normal set point rather than correcting it. Once initiated, the response increases the original stimulus until a specific event brings the process to an end. Classic examples in the human body include blood clotting and uterine contractions during childbirth, where rapid completion of the process is beneficial.Which of these is true about the metabolism of glucose?
- A. Aerobic metabolism produces lactic acid.
- B. Anaerobic metabolism produces lactic acid.
- C. Anaerobic metabolism produces carbonic acid.
- D. Both A and C are true about the metabolism of glucose.
Explanation
Correct Answer Is:
B. Anaerobic metabolism produces lactic acid.Explanation
During anaerobic metabolism, glucose is broken down without sufficient oxygen, leading to the formation of lactic acid as an end product. This occurs commonly in muscle cells during intense activity when oxygen delivery cannot meet demand. Aerobic metabolism, in contrast, produces carbon dioxide and water, not lactic acid, making anaerobic lactic acid production the correct statement.Which of the following is true of the essential organ in the reproductive system?
- A. It produces gametes.
- B. It is called the testis in the male.
- C. It is called the gonad in both sexes.
- D. All of the above are true.
Explanation
Correct Answer Is:
D. All of the above are true.Explanation
The essential organs of the reproductive system are the gonads, which are responsible for producing gametes and sex hormones. In males, the gonads are called testes, and in females, they are called ovaries. The term “gonad” applies to both sexes and refers to these primary reproductive organs, making all the listed statements correct.Homeostasis can best be described as:
- A. A constant state maintained by living and nonliving organisms.
- B. A state of relative constancy.
- C. Adaptation to the external environment.
- D. Changes in body temperature.
Explanation
Correct Answer Is:
B. A state of relative constancy.Explanation
Homeostasis refers to the body’s ability to maintain a relatively stable internal environment despite continuous changes in both internal and external conditions. It does not imply an unchanging or constant state, but rather dynamic equilibrium regulated by feedback mechanisms. Body temperature regulation is only one example of homeostasis, not its definition.How to Order
Select Your Exam
Click on your desired exam to open its dedicated page with resources like practice questions, flashcards, and study guides.Choose what to focus on, Your selected exam is saved for quick access Once you log in.
Subscribe
Hit the Subscribe button on the platform. With your subscription, you will enjoy unlimited access to all practice questions and resources for a full 1-month period. After the month has elapsed, you can choose to resubscribe to continue benefiting from our comprehensive exam preparation tools and resources.
Pay and unlock the practice Questions
Once your payment is processed, you’ll immediately unlock access to all practice questions tailored to your selected exam for 1 month .