Study Notes for BOEM 2011 & BOEM 2013 Course Overview

Course Introduction

  • Course Name: BOEM 2011 and BOEM 2013

  • Coordinators: Bradley Loniconis and Judith

  • Focus: Understanding cell function, stresses on organs, plasma membrane, and cellular outputs to meet bodily needs.

Course Structure Overview

  • Major themes include membranes, channels, and transporters.

  • Resources:

    • Course announcements posted weekly on Blackbaud Ultra.

    • Lecture recordings and slides available for download.

    • Assignment tasks highlighted.

Lecture and Practical Schedule

  • Lectures Per Week: 3

  • Schedule:

    • 2 lectures on the first day (first lecture and double lecture).

    • 1 lecture on the next day at 8 AM.

  • Practical Classes: Start on Friday.

Module Breakdown

  1. Muscle Cells: Focus on heart and skeletal muscle.

  2. Sensory Neuroscience: Taught by Dr. Sean; links to Biom 2013 practices.

  3. Neuroscience Fundamentals: Taught by Dr. Mark.

  4. Endocrinology Section: Related to body systems.

  5. Epithelia: Discusses tissue types.

  6. Immunology: Final module covering immune response.

  • Tutoring Staff:

    • All tutors are highly recommended; Natalie is the new head tutor.

Suggested Reading

  • Recommended textbooks will aid in understanding course material but are not mandatory purchases.

  • Personal initiative in reading is emphasized for effective learning.

Learning Directives

  • Take initiative in your learning process; become responsible for your progress.

  • Engage in lectures, prepare by reading before attending, and participate actively.

  • Post-lecture Q&A is encouraged; lecturers are approachable for questions.

Assessments Overview

  • Final Exam:

    • 2-hour exam at the end of the semester.

    • Worth 50% of the total grade and a course hurdle (must pass it to pass the course).

    • Topics will cover all six modules, with questions evenly distributed.

    • Format includes multiple choice questions and short answer questions (which may involve diagrams or essays).

  • Online Quizzes:

    • Worth 15% of the total grade.

    • Quizzes will open after each module and be available for one week, consisting of 10 randomly assigned questions.

  • Practical Assessments:

    • Practical learning tasks worth 25% total.

    • NURN practical: 5% (starting Friday).

    • Cardiovascular practicum: 20%.

  • Meta Learning Tasks:

    • Worth 10%.

    • Open-ended reflective questions aimed at evaluating learning processes.

  • Support:

    • Contact information for administrative help; email for queries.

    • Acknowledge potential for sick days or course conflicts.

Practical Classes

  • Importance of attending assigned practical groups; inequity in attendance may disrupt governance.

  • In-class assessments during practicals; missing attendance may require applying for a deferral due to valid reasons (like illness).

  • Group work within practicals emphasized; consistency with peers and tutors is essential for collaborative learning.

  • Applications for deferral or extensions must adhere to specified guidelines, including reviewing the course profile.

Practical Learning Objectives

  1. Understanding cellular membrane anatomy and function.

  2. Grasping the fundamentals of Nernst potentials.

  3. Precision in conducting experiments and data interpretation.

  4. Literature engagement and effective scientific writing.

  5. Navigate experimental ideation and evaluation processes.

Feedback and Continuous Support

  • Emphasis on peer-to-peer Q&A via Ed discussion board; collaborative problem-solving.

  • Constructive feedback mechanisms available throughout practical series.

  • Encouragement for students to express difficulties or confusion throughout courses; support systems in place.

Muscle Cells Module Introduction

Overview of Concepts

  • Focus on cardiac muscle cell functions and skeletal muscle structures.

  • Importance of Ringer solutions in experiments.

  • Cardiac output formula:

    • extCardiacOutput=extHeartRateimesextStrokeVolumeext{Cardiac Output} = ext{Heart Rate} imes ext{Stroke Volume}

  • Understanding how heart rate and stroke volume correlate under stress conditions.

Historical Context on Cardiac Research

  • Sidney Ringer's experiments on frog hearts; significance of external calcium in heart functionality.

  • Modern applications of historical findings; continual research into cardiac health and interventions.

Core Structures of Cardiac Function

  • Membrane properties of cardiac cells; critical for contraction.

  • Importance of ion channels, pumps, and exchanges in maintaining cellular and tissue homeostasis.

Ion Channel Functionality

Types of Ion Channels

  • Voltage-dependent ion channels: pass specific ions selectively in one direction against concentration gradients.

  • Ligand-dependent channels: activated by the binding of a ligand.

  • Importance of ion channels in understanding heart diseases and treatment pathways (e.g., calcium channel blockers).

Mechanisms of Action and Implications

  • Role of sodium channels in action potential formation; contrast between cardiac and nerve action potentials.

  • Channel states: resting, activated, inactivated, and implications for cardiac function.

Cardiac Physiological Dynamics

  • Cardiac muscle structure: striated muscle aiding in force generation.

  • Intercalated discs critical for synchronized contraction and transmission of electrical signals.

  • Action potential generation and propagation throughout cardiac tissue.

Action Potentials: Mechanism and Characteristics

Phases of Action Potential

  1. Rapid Depolarization: Sodium influx via voltage-gated channels.

  2. Plateau Phase: Calcium influx maintaining depolarization.

  3. Repolarization: Potassium efflux restoring resting membrane potential.

Ion Channel Dynamics

  • Differences between cardiac and skeletal muscle action potentials in terms of duration and recovery.

  • Significance of ion channel synchronization with contractile events in maintaining heart rhythm: prevents tetany or abnormal beats.

Pacemaker Activity

  • Role of SA node in generating rhythm; drift to threshold facilitated by funny current (IF).

  • Reflective discussion: importance of calcium current in sinoatrial node facilitating heart rhythms.

Review of Learning Resources

  • Engagement with textbooks and online resources for deeper understanding.

  • Pre-lecture material review as a strategy for effective learning.

  • Importance of assessing one’s understanding related to ion channels and action potential generation in cardiac physiology.

  • Conclusive remarks encourage students to actively participate, direct their learning, and approach lecturers for interactive learning sessions.