CPPS 308 Final Exam Review

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Questions and Answers

What is the main reason to add CaCl2 last during a procedure?

  • It enhances the solubility of other compounds.
  • It improves the pH balance.
  • It is prone to precipitation. (correct)
  • It reduces the reaction time.

Which of the following elements is NOT a key aspect of preclinical testing?

  • Toxicology
  • Pharmacokinetics
  • Pharmacodynamics
  • Market analysis (correct)

What does the therapeutic index indicate in drug evaluation?

  • The number of clinical trials required.
  • The number of regulatory agencies involved.
  • The overall time for drug approval.
  • The difference between toxic and effective doses. (correct)

Which regulatory agency is responsible for drug approval in the USA?

<p>FDA (B)</p> Signup and view all the answers

What stage comes after preclinical testing in the drug evaluation process?

<p>Clinical trials (A)</p> Signup and view all the answers

What is the primary purpose of the PowerLab Data Acquisition System?

<p>To acquire, store, and analyze biological data. (D)</p> Signup and view all the answers

Which of the following best describes the role of regulatory bodies during clinical trials?

<p>They may conduct inspections and site visits. (C)</p> Signup and view all the answers

Which section of a laboratory report includes the protocol followed during an experiment?

<p>Materials and Methods (A)</p> Signup and view all the answers

In the context of pharmacokinetics, what does t1/2 refer to?

<p>Time taken for half of the drug to be eliminated. (B)</p> Signup and view all the answers

In pharmacology, what does the term Emax refer to?

<p>The maximum effect achieved by the drug. (D)</p> Signup and view all the answers

What is necessary for the introduction section of a lab report?

<p>Historical background of the research topic. (D)</p> Signup and view all the answers

What is the primary focus of pharmacodynamics in drug testing?

<p>The drug's selective effects on the body. (A)</p> Signup and view all the answers

Which process is essential for converting analog signals to digital in data acquisition systems?

<p>Signal digitization (A)</p> Signup and view all the answers

What component is responsible for detecting biological signals in the PowerLab system?

<p>A transducer (A)</p> Signup and view all the answers

What kind of writing should be avoided in the introduction of laboratory reports?

<p>Copied text from resources (A)</p> Signup and view all the answers

Which part of the lab report states the purpose of the experiment?

<p>AIM/Objectives (C)</p> Signup and view all the answers

What is the primary role of DHEA in fetal development?

<p>To produce estradiol and estriol (B)</p> Signup and view all the answers

What component is essential for performing in vitro experiments?

<p>Preserved and sectioned tissues (A)</p> Signup and view all the answers

Which animal models are commonly used for experimentation in this field?

<p>Mice and rats (C)</p> Signup and view all the answers

What is the significance of trophoblast stem cells in experimentation?

<p>They provide insights into placental functions. (A)</p> Signup and view all the answers

In which type of experiment are explant cultures used?

<p>To evaluate live tissue behavior (B)</p> Signup and view all the answers

What does the acronym HTR8-SVneo represent in the context of trophoblast cells?

<p>Human Trophoblasts, 8th clone with viral immortality (C)</p> Signup and view all the answers

What is typically the aim of forming a hypothesis in experimentation?

<p>To collate questions and knowledge (B)</p> Signup and view all the answers

Which of the following is a limitation mentioned in assessing placental function?

<p>Inaccessibility of human tissues (B)</p> Signup and view all the answers

What is one of the primary functions of blood vessel endothelial cells?

<p>Maintaining blood in a fluid state (C)</p> Signup and view all the answers

Which of the following mediators is classified as a vasodilator?

<p>Nitric oxide (D)</p> Signup and view all the answers

What does endothelial dysfunction indicate?

<p>Decreased relaxation of smooth muscle to agonist-induced relaxation (C)</p> Signup and view all the answers

Which of the following is a role of endothelial cells in blood coagulation?

<p>Enhancing platelet aggregation (D)</p> Signup and view all the answers

What effect does bradykinin have in vascular smooth muscle function?

<p>It functions as a vasodilator (D)</p> Signup and view all the answers

Which mediator is NOT a vasoconstrictor?

<p>Acetylcholine (B)</p> Signup and view all the answers

What does the activation of endothelial cells result in?

<p>Influences on inflammation and cell proliferation (D)</p> Signup and view all the answers

Which condition describes independent function between smooth muscle and endothelial cells?

<p>Endothelial dysfunction without smooth muscle impairment (B)</p> Signup and view all the answers

What is the primary role of trophoblasts during implantation?

<p>To establish maternal-fetal contact (D)</p> Signup and view all the answers

During which days of the menstrual cycle does uterine receptivity typically occur?

<p>Days 20-24 (D)</p> Signup and view all the answers

What process occurs approximately 5-9 days after fertilization?

<p>Implantation (D)</p> Signup and view all the answers

What is the function of the cytotrophoblast cells?

<p>To fuse and form the syncytiotrophoblast (D)</p> Signup and view all the answers

What happens to the decidua during pregnancy?

<p>It is shed post-delivery (B)</p> Signup and view all the answers

Which factor can lead to complications during the pre-implantation phase?

<p>Insufficient hormonal preparation (C)</p> Signup and view all the answers

What is a key characteristic of the blastocyst during implantation?

<p>It becomes encapsulated within the uterine wall (C)</p> Signup and view all the answers

How is the endometrium affected during trophoblastic invasion?

<p>It is converted into decidua (B)</p> Signup and view all the answers

What is the primary objective of the lab involving isolated aortic rings?

<p>To detect endothelial dysfunction due to hypertension (A)</p> Signup and view all the answers

Which neurotransmitter is responsible for skeletal muscle contraction?

<p>Acetylcholine (D)</p> Signup and view all the answers

What type of muscle is the frog rectus abdominis considered to be?

<p>Voluntary skeletal muscle (A)</p> Signup and view all the answers

Which parameters will be obtained from the concentration response curves in the aortic rings?

<p>Emax and EC50 values (C)</p> Signup and view all the answers

What controls skeletal muscle activity?

<p>The central nervous system (B)</p> Signup and view all the answers

Which component of the nervous system carries signals from muscles back to the spinal cord?

<p>Afferent pathways (C)</p> Signup and view all the answers

What materials are used to create concentration response curves in the aortic rings?

<p>Acetylcholine and sodium nitroprusside (D)</p> Signup and view all the answers

Why is the frog rectus abdominis muscle significant in pharmacology?

<p>It helps to describe dose-response curves (B)</p> Signup and view all the answers

Which part of the spinal cord is involved with motor innervation?

<p>Ventral horn (C)</p> Signup and view all the answers

What is the role of sodium nitroprusside (SNP) in the lab study?

<p>To analyze smooth muscle relaxation independently of the endothelium (C)</p> Signup and view all the answers

Flashcards

Emax

The maximum effect a drug can produce.

Threshold dose

The lowest dose of a drug that produces a response.

PowerLab

A data acquisition system for biological signals.

LabChart

Acquisition system used in pharmacology & physiology.

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Title Page (Lab Report)

Includes author names, group name, and experiment title.

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Introduction (Lab Report)

Background information on the experiment topic, in 2-3 paragraphs.

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Aim/Objectives (Lab Report)

Purpose of the experiment, clearly stating what you are trying to find.

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Materials and Methods (Lab Report)

Detailed protocol used during the experiment (reproducible procedures).

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Pre-clinical drug testing

Animal studies to assess a drug's safety and effectiveness before human trials.

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Therapeutic Index

A measure of a drug's safety; the ratio of toxic dose to effective dose.

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Pharmacodynamics

How a drug affects the body.

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Pharmacokinetics

How the body affects a drug.

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Clinical drug trials

Human testing of a drug's safety and effectiveness, with stages.

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Regulatory Agencies

Government organizations ensuring drug safety and approval (e.g., FDA, EMA).

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Drug Approval Process

Series of steps a drug goes through to get approval for use.

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Toxicity

Harmful effects of a drug.

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Vascular Endothelium

Cells lining blood vessels that regulate blood flow and other functions.

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Vasodilation

Widening of blood vessels.

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Vasoconstriction

Narrowing of blood vessels.

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Endothelial-dependent relaxation

Blood vessel smooth muscle relaxation caused by endothelial cells.

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Endothelial Dysfunction

Reduced ability of blood vessels to relax in response to endothelial signals.

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Nitric Oxide (NO)

A vasodilator released by endothelial cells.

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Endothelium-derived hyperpolarizing factor (EDHF)

A vasodilator released by endothelial cells.

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Smooth Muscle Relaxation

The process where smooth muscle cells in blood vessels loosen to allow blood flow.

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Implantation

The process where an embryo attaches to and embeds itself into the uterine wall, establishing a connection between the mother and fetus.

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Uterine Receptivity

The window of time during the menstrual cycle when the uterus is prepared to receive and accommodate an embryo for successful implantation.

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Syncytiotrophoblast

A multinucleated layer of cells formed from the fusion of cytotrophoblast cells. It plays a crucial role in invasion into the uterine wall.

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Decidua

The modified endometrial lining of the uterus during pregnancy. It is formed by the invasion of the syncytiotrophoblast and provides nourishment and support for the developing embryo.

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Trophoblast

The outermost layer of cells surrounding an embryo that are responsible for invasion and establishment of the placenta.

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When does implantation occur?

Implantation typically occurs between 5-9 days after fertilization and is complete by 10-12 days.

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How does the embryo become sticky?

The embryo becomes sticky due to the activity of trophoblast cells.

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What is the role of hormones in implantation?

Hormones play a critical role in preparing the uterus for implantation. They promote uterine receptivity.

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DHEA

A primary hormone produced by the fetal adrenal gland. It serves as a precursor for estradiol and estriol, which are important female sex hormones.

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Fetal Androgens

Hormones produced by the fetus, particularly in the adrenal glands. They play a role in fetal development and are converted into estrogens in the placenta.

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Placental Circulation

The flow of blood between the mother and the fetus through the placenta, a vital connection for nutrient and gas exchange.

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Estradiol and Estriol

Important female sex hormones produced within the placenta. They are derived from fetal androgens and play a critical role in pregnancy.

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Steroid Biosynthesis

The process of producing steroid hormones like DHEA, estradiol, and estriol. It occurs in the fetal adrenal gland and the placenta.

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In Situ Assays

Techniques used to examine tissues and cells in their natural environment. Immunofluorescence is a commonly used example.

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Cell Lines

Immortalized or primary cell cultures that can be grown and studied in the lab. They provide a model system for understanding biological processes.

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Animal Models

Living organisms, like mice, rats, or guinea pigs, used in experiments to study biological processes and test hypotheses.

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What is the role of SNP?

Sodium nitroprusside (SNP) is a vasodilator that acts directly on vascular smooth muscle, causing relaxation independent of endothelial function.

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What is meant by "endothelial dysfunction"?

Endothelial dysfunction refers to a reduced ability of blood vessels to relax in response to signals from endothelial cells.

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What is the purpose of the experiment?

The experiment aims to detect endothelial dysfunction in rat aortic rings by comparing the relaxation response to acetylcholine (ACh) and sodium nitroprusside (SNP).

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What is ACh and how does it work?

Acetylcholine (ACh) is a neurotransmitter that causes endothelium-dependent relaxation. It triggers the release of nitric oxide (NO) from endothelial cells, leading to smooth muscle relaxation.

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What is the difference between ACh and SNP effects?

ACh causes relaxation by stimulating endothelial cells, whereas SNP directly relaxes vascular smooth muscle.

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What is the function of the ventral horn in the spinal cord?

The ventral horn of the spinal cord contains motor neurons, which send signals to muscles for voluntary movement.

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What is the function of the dorsal horn in the spinal cord?

The dorsal horn of the spinal cord receives sensory information from the body.

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What is the role of acetylcholine in skeletal muscle contraction?

Acetylcholine, released by motor neurons, binds to nicotinic receptors on skeletal muscle fibers, triggering muscle contraction.

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What determines whether a muscle is voluntary?

Skeletal muscles are under voluntary control of the central nervous system, meaning they are consciously controlled.

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What is the importance of the frog rectus abdominis muscle in pharmacology?

The frog rectus abdominis muscle is a classic model in pharmacology for studying muscle physiology and drug responses.

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Study Notes

CPPS 308 Final Exam Review

  • Exam Date: December 7, 2024
  • Exam Time: 7:00 PM - 10:00 PM
  • Exam Location: HLTH B450
  • Format: 90 multiple-choice questions, some calculations; includes fill-in-the-blank, some questions are from lab experiments.
  • Study Materials: Lectures, slides, and lab experiments
  • Time Allotment: Approximately 2 minutes per question
  • Question Breakdown:
    • 50 questions on Pharmacology (animal ethics, buffers, dilutions, experimental protocols, drug profiling, and CRC graphs, rat aorta, rat ileum, frog skeletal muscle)
    • 40 Physiology questions (reproduction, cardiovascular, hematology, respirometry, metabolism)
  • Important Note: There will be no neurophysiology questions on the final exam.
  • Materials Needed: Pencil, calculator, student ID or government-issued photo ID.
  • Additional Notes: Some questions will require calculations and may involve choosing the best answer for fill in the blank questions. Exam booklet and scantron will be provided.

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