Dissection-Based Anatomy: Course Overview and Key Concepts

Course Philosophy: self-directed, integrated learning

• Emphasis on developing the ability to learn independently at home; instructors guide but do not spoon-feed. You must figure things out yourself and be proactive.
• The goal is to become a self-learner so that, by year four, you can navigate resources, make decisions, and study effectively without constant hand-holding.
• At semester start, you’ll receive some initial guidance, then you must stand on your own feet and learn to navigate resources, including AI and anatomy resources, which are noted to be fallible and full of mistakes. Critical thinking and resource vetting are essential.
• Do not be passive; be an advocate for your own learning. Ask questions freely: all questions are valuable; some are better than others, but every question has merit.
• You will be taught in a dissection-based course that combines lecture and lab as a single subject rather than separate entities; the two reinforce one another.
• Dissection is used to build practical, applicable anatomy knowledge with direct clinical relevance; you will study anatomy as applied anatomy with clinical applications embedded.

Course Structure: fusion of lectures and lab; cadaver-based learning

• Schedule and format:
  • Classes run Monday, Wednesday, Thursday, and Friday.
  • Friday is a dedicated lecture slot from 09:00–10:00 (9–10 am).
  • Monday/Wednesday/Thursday: lecture for the first hour, then lab; lectures are short (no more than 15 minutes of lecture per session).
  • Typical day: 9:00–12:00 with a heavy emphasis on lab work; most time is spent in the lab (
  • Lab hours: $9$ hours in the lab, $2$ hours of lecture; total weekly hours are lecture + lab).
• Lab and crew structure:
  • Each lab group has three students with rotating roles: dissector, system presenter, and group leader.
  • The course emphasizes three weeks to progress from shaky start to a higher skill level in visual-motor coordination; the goal is to become proficient in dissection and instrument handling.
  • You will dissect dog (canine) and cat anatomy from head to toe; there is no split between lecture and lab—content is integrated.
• Dissection philosophy and safety:
  • Cadaver-based learning provides irreplaceable hands-on experience; even with AI tools, there is no true substitute for live dissection.
  • You will be allowed to explore the cadaver freely in a controlled, supervised setting to learn by doing and making mistakes.
  • The lab environment will teach you to manage typical lab hazards (e.g., fumes) and maintain safety practices (footwear, personal protection).

Resources and Materials: core texts, anatomy references, and optional aids

• Primary textbook: Dice and Zach (4th edition, 5th edition similar in content with more updated pictures and tips); both are acceptable; the text is concise and to the point and covers all species.
• Atlas: detailed dissection guides; optional but recommended for detailed dissection guidance.
• For small animal practice, an Atlas of anatomy with dissection dishes and step-by-step guides is highly useful (optional but recommended).
• Additional resources: dissection videos; students may use any credible sources beyond the provided materials; instructor will assist in identifying credible resources.

Applied Anatomy: connecting theory to practice

• Applied anatomy approach: teaching focuses on how each structure functions in a clinical context (e.g., muscle attachments, vascular and nerve relations, surgical landmarks).
• Cadaver vs live context:
  • In cadavers, you learn anatomy and relationships; in live animals, you learn how these relate to function, stability, and clinical procedures (e.g., injections, punctures, surgical exposures).
  • Live anatomy highlights vascular risk and tissue responses that are not evident in cadavers.
• Clinical alignment:
  • Clinical applications are integrated into each system; you’ll learn to move from general anatomy to practical procedural knowledge (e.g., where to insert a needle, how to perform a puncture, how to locate landmarks).
• Visual-motor skill development:
  • The course emphasizes developing hand-eye coordination and tactile feedback essential for surgical and clinical tasks.
  • Early weeks are challenging but progress to a new skill level within ~3 weeks.

Key anatomical concepts and classification (overview)

• Axial vs Appendicular skeleton:
  • Axial skeleton: skull, vertebral column, sternum, ribs, and hyoid apparatus.
  • Appendicular skeleton: limbs (pelvic and pectoral girdles and their bones).
• Splanchnic/heterotopic bones (os splanchnoc or os intermedius):
  • Bones developing within soft tissue or associated with internal organs (e.g., os penis in dogs; os cordis in the heart of some species).
• Ossification and bone development:
  • Endochondral ossification: most long bones develop via a cartilage template that ossifies later.
  • Intramembranous ossification: flat bones (e.g., skull bones) form directly from fibrous connective tissue.
• Bone shapes and classifications by topography:
  • Long bones, short bones, flat bones, irregular bones, and sesamoid bones.
• Anatomical landmarks and clinical relevance:
  • Linea alba: a fibrous connective tissue band along the midline of the abdomen; key surgical entry point due to bloodless incision (no major vessels in the linea alba).
  • Mid-dorsal line (mid-dorsal graphene): a surface landmark along the back used during planning incisions and dissections.
  • Umbilicus: mid-ventral abdomen; palpable landmark used during abdominal assessments.
  • Carpal region, mammary glands, and tail region as practical landmarks during dissection and clinical exams.
• Os cordis and os penis examples:
  • Os cordis: a bone in the heart present in some species; ossification of an atrioventricular fibrous plate.
  • Os penis: a penile bone found in many male dogs; illustrates heterotopic bone formation.

Breeds, posture, and clinical predispositions (anatomy in practice)

• Breed-specific postures affect disease predispositions:
  • Short-legged, long-backed breeds (e.g., Dachshunds) are predisposed to intervertebral disc disease due to spine mechanics.
  • Bulldog-type breeds and other brachycephalic types may have different thoracic and spinal anatomies influencing disease risk.
  • German Shepherds and similar breeds have distinct gait/posture patterns that influence orthopedic risks.
• The concept of normal stance and gait:
  • Normal stance and gait are influenced by skeletal structure and musculature; deviations can indicate pathology.
• Practical takeaway:
  • Understanding breed-specific anatomy helps anticipate common clinical problems and informs diagnostic and treatment planning.

Examinations and assessment: structure, formats, and policies

• Exam structure:
  • Three progress exams and one final exam throughout the course.
  • Exams are comprehensive and will test integration of lecture content and lab skills.
  • Second exam topics include the lymphatic system, ophthalmic nerves, cardiovascular system, and abdominal wall; ~$90 ext{\%}$ of questions come from these topics across both lecture and lab, with ~$10 ext{\%}$ from material covered earlier.
  • Exam formats may include multiple-choice questions, short notes, labeling diagrams, and matching; clinical applications and landmarks are frequently tested.
• Grading and policies:
  • Grading follows a conventional A–B–C scale; no extra credit assignments are offered; adherence to AVMA guidelines is required across the program.
  • If a student is excused from an exam, makeup arrangements are made via the associate dean; makeup formats may vary (written, oral, etc.) but aim to reflect the original exam format as closely as possible.
  • Attendance is mandatory; missing more than 10% of class sessions can trigger consequences (an ad hoc evaluation or grade impact).
  • If a grade dispute arises, students may request a formal pre-grading review with a written dispute that is reviewed by the instructor and potentially an ad hoc committee.
• Exam logistics:
  • Exams typically occur on Thursdays; on exam days, there is a detailed process starting early in the morning (06:30) to prepare the lab environment.
  • Group assignments (Group A vs Group B) determine the order of taking lab vs lecture components during exams.
  • In the event of an excused absence, makeup options will be scheduled within a week of return; the makeup format may vary to accommodate circumstances.

Professionalism, ethics, and the learning culture

• You are entering a serious profession with high expectations for accuracy and integrity.
• Honesty and ethical conduct are mandatory; dishonest behavior or misrepresentation can trigger formal investigation and disciplinary action (ad hoc committee).
• The course emphasizes responsibility to patients and clients; the knowledge and skills you acquire directly impact animal welfare and outcomes.
• Support structures exist (office hours, email, group studies, study groups) to help you succeed; seek help early if you struggle.

Study strategies, collaboration, and personal logistics

• Study approaches:
  • Group study is recommended to fill gaps; even strong self-learners benefit from collaborative review.
  • Review sessions should involve discussing structures and landmarks, then applying them to live or simulated cases.
• Lab access and logistics:
  • The cadaver lab is available essentially 24/7; you should coordinate with your group before performing any dissection to ensure all members are present.
  • Each group typically receives two bone boxes for the cadaver materials; equipment and access can vary by year depending on loan availability.
• Time management and expectations:
  • Anatomy is information-dense; expect mental and emotional fatigue; pacing and consistent study routines are crucial.
  • Some courses may be more challenging for your learning style; push through difficult topics rather than neglecting them.
• Practical medical and clinical mindset:
  • You’ll learn to translate anatomical knowledge into clinical reasoning, including how bones relate to locomotion, posture, and disease prevention.
  • The overall aim is to train you to be competent and capable clinicians and veterinarians who can perform procedures safely and effectively.

Quick reference: key terms to know (highlights)

• Axial skeleton; Appendicular skeleton
• Linea alba; Mid-dorsal line (mid dorsal graphene)
• Umbilicus; Mammary glands
• Os penis; Os cordis
• Endochondral ossification; Intramembranous ossification
• Splanchnic/heterotopic bones; Sesamoid bones
• Hyoid apparatus; Pelvic and pectoral girdles
• Gross anatomy vs microanatomy (histology) vs developmental anatomy
• Linea alba as a bloodless incision site; landmark-based injections and punctures
• Bone classifications by location (axial vs appendicular) and by shape (long, short, flat, irregular, sesamoid)
• Breed-specific anatomical variations and their clinical implications

Practical takeaways to prepare for exams and labs

• Approach every lab with a plan: identify landmarks, anticipate neighboring structures, and verbalize your steps before cutting.
• Use the linea alba and mid-dorsal line as consistent entry and orientation points during abdominal or dorsal dissections.
• Practice palpation and surface anatomy to build a mental map that translates to dissection findings and clinical exams.
• Be prepared to discuss the clinical significance of anatomical structures (not just their names): e.g., surgical landmarks, potential complications if a structure is damaged, and how choices in approach affect safety and outcomes.
• Build a study routine that includes both solo study and group review sessions to reinforce memory and fill gaps.
• Remember: you are training to be a professional veterinarian where accuracy, integrity, and patient welfare are paramount.