Anatomy and Physiology II with Lab (D313)

Anatomy and Physiology II with Lab (D313)

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Free Anatomy and Physiology II with Lab (D313) Questions

1.

What is asthma

  • Heart disease

  • Lung cancer

  • Acute bacterial infection

  • Chronic respiratory condition causing airway inflammation

Explanation

Correct Answer D. Chronic respiratory condition causing airway inflammation

Explanation

Asthma is a chronic respiratory condition characterized by inflammation and narrowing of the airways, which leads to difficulty breathing. It can be triggered by various factors, such as allergens, exercise, or irritants, and is often accompanied by symptoms like wheezing, coughing, and shortness of breath. Asthma causes the muscles around the airways to tighten, further restricting airflow.

Why other options are wrong

A. Heart disease

This is incorrect because asthma is not related to heart disease. Heart disease involves the cardiovascular system, while asthma affects the respiratory system.

B. Lung cancer

This is incorrect because asthma is not a form of cancer. Lung cancer involves abnormal cell growth in the lungs, while asthma involves inflammation of the airways.

C. Acute bacterial infection

This is incorrect because asthma is not an infection. It is a chronic condition, whereas acute bacterial infections are typically caused by harmful bacteria and can be treated with antibiotics.


2.

Discuss why maintaining plasma osmolarity within normal limits is important.

  • It has no significant impact on the body's functions

  • It affects cell excitability and electrolyte balance

  • It only affects urine production

  • It is important for maintaining body temperature

Explanation

Correct Answer  B. It affects cell excitability and electrolyte balance

Explanation

Maintaining plasma osmolarity within normal limits is crucial for ensuring proper cell function and maintaining fluid balance across cell membranes. Osmolarity directly influences the movement of water in and out of cells, which affects cell volume, excitability, and overall function. Disruptions in plasma osmolarity can lead to dehydration or overhydration, impacting processes like nerve signaling, muscle function, and electrolyte balance.

Why other options are wrong

A. It has no significant impact on the body's functions

This is incorrect because plasma osmolarity plays a vital role in regulating numerous body functions, including fluid balance, cell function, and nerve activity.

C. It only affects urine production

While osmolarity affects urine production as part of the body’s mechanism for regulating water and electrolyte balance, it also influences many other functions, including cellular activity and tissue health.

D. It is important for maintaining body temperature

Although osmolarity can play a role in overall fluid balance, it is not directly involved in regulating body temperature. Temperature regulation is more dependent on mechanisms like sweating, shivering, and blood flow.


3.

Which of the following statements accurately describes a primary structural difference between arteries and veins

  • Arteries have a larger lumen and thinner walls than veins.

  • Veins contain more elastic tissue and smooth muscle than arteries.

  • Arteries have thicker walls and a smaller lumen compared to veins.

  • Veins have a higher blood pressure than arteries.

Explanation

Correct Answer C. Arteries have thicker walls and a smaller lumen compared to veins.

Explanation

Arteries have thicker walls and smaller lumens because they need to withstand and maintain the high pressure of blood being pumped from the heart. This allows them to efficiently carry oxygenated blood away from the heart to the tissues. Veins, on the other hand, have thinner walls and larger lumens since the pressure in veins is much lower, and they return blood to the heart.

Why other options are wrong

A. Arteries have a larger lumen and thinner walls than veins – This is incorrect because arteries have thicker walls and smaller lumens compared to veins due to the higher blood pressure they must withstand.

B. Veins contain more elastic tissue and smooth muscle than arteries – This is incorrect as veins have less elastic tissue and smooth muscle compared to arteries. Arteries require more of these components due to the higher pressure at which blood flows.

D. Veins have a higher blood pressure than arteries – This is incorrect because arteries have higher blood pressure than veins, which is why they need thicker walls to handle the pressure.


4.

Using the GTPAL system, what is the gravidity parity of a woman who has been pregnant three times previously, with all children from previous pregnancies still alive, and has a current pregnancy at 38 weeks gestation

  • G3 P2 A0 L3

  • G4 P3 A0 L3

  • G3 P3 A0 L4

  • G4 P2 A0 L3

Explanation

Correct Answer B. G4 P3 A0 L3

Explanation

In the GTPAL system:

G represents the total number of pregnancies, including the current one. The woman is currently pregnant, so G = 4.

P refers to the number of full-term pregnancies (after 37 weeks). She has had 3 previous pregnancies that reached full term, so P = 3.

A stands for the number of pregnancies that ended in abortion or miscarriage. She has no such history, so A = 0.

L refers to the number of living children. She has 3 living children, so L = 3.

Why other options are wrong

A. G3 P2 A0 L3

This is incorrect because the woman is currently pregnant, so G should be 4, not 3.

C. G3 P3 A0 L4

This is incorrect because although she has 3 living children, she is currently pregnant, and G should be 4, not 3.

D. G4 P2 A0 L3

This is incorrect because she has had 3 full-term pregnancies, not 2, so P should be 3, not 2.


5.

 What structural similarities exist between lymph nodes and the spleen

  • Both lack a structural framework for fluid movement

  • Both are exclusively found in the abdominal cavity

  • Both have capsules and allow fluid circulation and filtering

  • Both are responsible for producing red blood cells

Explanation

Correct Answer C. Both have capsules and allow fluid circulation and filtering

Explanation

Both lymph nodes and the spleen have a connective tissue capsule that encloses their structure. They both play a role in filtering fluids: lymph nodes filter lymph, while the spleen filters blood. Additionally, both structures are involved in immune system responses by containing specialized cells that can detect pathogens and other harmful substances in the fluid they filter.

Why other options are wrong

A. Both lack a structural framework for fluid movement – This is incorrect because both the lymph nodes and the spleen have structural frameworks that facilitate fluid movement and filtration. The spleen, for instance, has a red pulp and white pulp that organize blood flow, and lymph nodes have a network of sinuses that filter lymph.

B. Both are exclusively found in the abdominal cavity – This is incorrect because lymph nodes are distributed throughout the body, including the cervical, axillary, and inguinal regions, whereas the spleen is located in the abdominal cavity.

D. Both are responsible for producing red blood cells – While the spleen can produce red blood cells during fetal development, it does not do so in adults. Lymph nodes are not involved in red blood cell production at all; they are primarily involved in immune functions.


6.

How does the lymphatic system move lymph

  • By using a central pump similar to the heart

  • Through muscle contractions and external stimuli

  • By the action of red blood cells

  • By passive diffusion through the lymphatic walls

Explanation

Correct Answer B. Through muscle contractions and external stimuli

Explanation

The movement of lymph in the lymphatic system is primarily driven by the contraction of surrounding skeletal muscles and external stimuli such as breathing movements and body movement. These muscle contractions help propel lymph through the lymphatic vessels, as the system lacks a central pump like the heart.

Why other options are wrong

A. By using a central pump similar to the heart

Unlike the cardiovascular system, the lymphatic system does not have a central pump like the heart. The movement of lymph relies on skeletal muscle contractions and the pressure changes from breathing rather than a dedicated pumping organ.

C. By the action of red blood cells

Red blood cells do not play a role in moving lymph. Lymph is transported by the action of muscle contractions and pressure changes, not by blood cells, which circulate in the bloodstream, not the lymphatic system.

D. By passive diffusion through the lymphatic walls

Lymph movement is not solely based on passive diffusion. While some movement may occur through diffusion, the primary mechanism for lymph flow is driven by external factors such as muscle contractions and changes in pressure, rather than passive diffusion through vessel walls.


7.

Which of the following tissues is NOT typically found in the dermis layer of the skin

  • Dense irregular connective tissue

  • Epithelial tissue

  • Smooth muscle tissue

  • Areolar connective tissue

Explanation

Correct Answer B. Epithelial tissue

Explanation

The dermis is made up of connective tissue, including dense irregular connective tissue, areolar connective tissue, and smooth muscle tissue. Epithelial tissue, however, is not found in the dermis; it is found in the epidermis, which is the outermost layer of the skin.

Why other options are wrong

A. Dense irregular connective tissue

This is incorrect because dense irregular connective tissue is a major component of the dermis. It provides strength and elasticity to the skin.

C. Smooth muscle tissue

This is incorrect because smooth muscle tissue is found in the dermis, where it controls the movement of hair follicles (e.g., arrector pili muscles) and helps regulate blood flow through blood vessels.

D. Areolar connective tissue

This is incorrect because areolar connective tissue is also found in the dermis. It provides elasticity and flexibility to the skin.


8.

Is the trachea superior or inferior to the diaphragm

  • Inferior

  • Superior

  • Medial

  • Lateral

Explanation

Correct Answer B. Superior

Explanation

The trachea is located above the diaphragm and is considered superior to it. It connects the larynx (voice box) to the bronchi and is part of the upper respiratory tract. The diaphragm is a muscle at the base of the thoracic cavity, and the trachea lies above it, closer to the neck.

Why other options are wrong

A. Inferior – The trachea is superior to the diaphragm, not inferior. It is located above the diaphragm, closer to the head.

C. Medial – While the trachea is medial (in the middle) of the body, the correct answer in relation to its position to the diaphragm is "superior," not "medial."

D. Lateral – The trachea is not lateral to the diaphragm; it lies in the midline, superior to the diaphragm.


9.

Which equipment was used to measure blood pressure in the lab

  • Doppler

  • Stethoscope

  • Sphygmomanometer

  • Thermometer

Explanation

Correct Answer C. Sphygmomanometer

Explanation

A sphygmomanometer is the standard device used to measure blood pressure. It consists of a cuff that inflates around the arm to occlude blood flow, followed by gradual deflation to measure systolic and diastolic pressures with a stethoscope or a digital readout.

Why other options are wrong

A. Doppler

A Doppler is used to measure blood flow, not blood pressure. It can assess blood flow velocity and detect abnormal sounds in blood vessels, but it doesn't measure blood pressure directly.

B. Stethoscope

While a stethoscope is used in conjunction with a sphygmomanometer to listen for heart sounds during blood pressure measurement, it is not the primary equipment for measuring blood pressure.

D. Thermometer

A thermometer measures temperature, not blood pressure. It is not used to measure circulatory pressure or blood flow.


10.

What is the most inferiorly located organ of the respiratory system

  • The bronchi

  • The trachea

  • The diaphragm

  • The lungs

Explanation

Correct Answer C. The diaphragm

Explanation

The diaphragm is the most inferiorly located organ of the respiratory system. It is a muscular structure located at the bottom of the thoracic cavity and separates the chest cavity from the abdominal cavity. The diaphragm plays a key role in the mechanics of breathing by contracting and relaxing, allowing for inhalation and exhalation.

Why other options are wrong

A. The bronchi – The bronchi are located above the diaphragm, connecting the trachea to the lungs. They are not the most inferior organ in the respiratory system.

B. The trachea – The trachea is located above the bronchi, closer to the head, and is also superior to the diaphragm.

D. The lungs – The lungs are located above the diaphragm but are not the most inferior structure in the respiratory system; they are superior to the diaphragm.


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