This packet applies the full six-rubric system to the cardiovascular unit of an undergraduate A&P lab. It includes controlled-vocabulary lists for every identification item, anchor exemplars for grader calibration, score sheets sized for clipboard use, and bundle thresholds tied to letter grades.

Unit learning targets

By the end of the cardiovascular unit, a student should be able to:

• Identify the chambers, valves, great vessels, and surface features of the human heart on a model and on a preserved specimen (sheep heart).
• Name the components of the cardiac conduction system in correct anatomical and functional order.
• Identify major systemic and pulmonary vessels on a torso model and on diagrams.
• Distinguish the three layers of the vessel wall and the three primary vessel types in stained histology preparations.
• Perform the sheep heart dissection with appropriate technique and identify the structures requested by the practical exam.
• Take a peripheral pulse and a manual blood pressure measurement to published clinical accuracy thresholds.
• Maintain a contemporaneous lab notebook documenting the above.

Rubrics applied in this unit

One canonical answer per pin. Pre-approved synonyms pass; the spelling column shows the discriminator on common confusions. TAs apply the table; they do not infer.

The conduction system is graded as both an identification task (each component) and a sequencing task (correct order). The diagram below is the canonical reference.

Sequencing item

If the practical includes a sequencing question ("In what order does an action potential travel through the conduction system?"), the rubric is:

Vessel identification on a torso model. Both arterial and venous systems are graded against the same controlled vocabulary. Region specification is required where the vessel name is ambiguous without it.

Same pin as R1, but two judgments. Function answers are graded against the pre-written list of acceptable answers below. The student doesn't need to match the canonical phrasing word-for-word — they need to hit the functional concept the canonical phrasing describes.

For each slide: identify the tissue or vessel and name at least two distinguishing features visible in the field. Naming features is the part that distinguishes reasoning from guessing.

Anchor exemplars (for grader calibration)

Process is observed live during the lab session. The TA circulates with this clipboard; the student is not interrupted. The decision is made at the end of the dissection, with the specimen and notebook in front of the grader.

Observable criteria (4-point binary checklist)

• Tools used appropriately. Probe is preferred over blade for blunt dissection; scalpel is used only for the planned cuts named in the procedure; scissors are used point-up to avoid puncturing underlying structures.
• Specimen positioned correctly for each cut. Anatomical orientation (apex vs base, anterior vs posterior) is maintained and verbalized before each major cut.
• Target structures exposed without damage. Coronary vessels visible on the external surface; chordae tendineae and papillary muscles intact and visible after the planned ventricular cut; valves identifiable; great vessels traceable to their chambers.
• Cleanup and storage per protocol. Specimen returned to its container or disposed of per the day's procedure; tools cleaned and returned to station; bench wiped down; gloves doffed correctly.

What this rubric is not

It is not graded on whether the student found every structure on the answer key — that's R1's job. R4 is about technique. A student can pass R4 with a partially completed dissection if the technique was sound; a student can fail R4 with a fully completed dissection if the technique was not.

Applied each week of the unit. The notebook is reviewed at the bench at the end of the lab session; no take-home grading. The decision is made with the student present and the entry visible.

Six items (all required for pass)

• Dated, page-numbered, and in ink. Pencil, erasable ink, or detachable pages are not pass-eligible.
• Pre-lab section completed before bench work began. Objectives, expected procedure, and any predictions are written before the lab activity, not after. Coordinator may verify this with TA at the start of the session.
• Data recorded contemporaneously. Measurements and observations are entered as they happen, not transcribed later from a scrap sheet. Includes BP measurements, pulse rates, dissection observations.
• Observation kept distinct from interpretation. What was seen and what it might mean are physically separated on the page (different paragraphs, different columns, or labeled "obs" vs "interp").
• Errors crossed out with a single line, not erased or whited-out. The original is still legible; a brief note indicates the correction.
• Sketches labeled with magnification, stain, and visible structures. Histology drawings include the magnification used (e.g. 400×); dissection drawings indicate orientation (anterior view, etc.).

Why this rubric exists in this form

The notebook is the only assessment instrument that runs continuously through the term. Every other rubric is a snapshot. The notebook is the record of thinking-as-it-happened, which is what every downstream professional setting (clinical charting, research documentation, investigative procedure) actually rewards. The rubric is checklist-based so the conversation with the student is about what was done, not about what the grader thought of it.

The cardiovascular unit contributes 4 stations to the term-end capstone. Each station is 90 seconds and tests four judgments: identification, function, clinical context, and cross-system integration. The station passes at 3 of 4; excellence is 4 of 4.

Station 1 — Heart, gross specimen

Station 2 — Conduction system, diagram or model

Same four-judgment structure. Sequencing is one identification judgment; the function judgment focuses on the pathway's coordination role.

Station 3 — Vessel histology, microscope

Identification = vessel type. Function = role in circulation. Clinical = pathology associated with the vessel type (e.g. "atherosclerosis affects elastic and muscular arteries"). Integration = relationship to surrounding tissue or organ supplied.

Station 4 — Pulse and BP measurement, paired student

Performance station, observed live. Identification = correct palpation site or auscultation site. Function = explain what the measurement is reporting (cardiac cycle phase, afterload context, autonomic context). Clinical = state one threshold, range, or pathology interpretation. Integration = relate the measurement to systemic state (hydration, exercise, autonomic tone).

Capstone scoring summary

These cards live at every grading station during the practical. They give TAs a calibration reference for the most common edge cases.

R1 anchor: Heart structures

R2 anchor: Function statements

R3 anchor: Histology

R4 anchor: Dissection technique

Student: ______________________________________    Section: _______________    Date: _______________    TA: _______________

R1 + R2 (paired identification)

R3 Histology

R4 Dissection   (observed during lab — recorded once at end of dissection)

P = Pass · NY = Not yet · — = Not assessed (function only attempted if ID passes) · Edge cases: circle, do not check, and bring sheet to coordinator at end of session for adjudication.