Comparative Animal Physiology

Course Description

Comparative Animal Physiology covers general and comparative animal physiology — a study of complex structures, phenomena, and concepts involved in regulation physiological processes employed by different groups of animals.

Within the SCNS taxonomy, PCB is the Process Biology prefix. The University of West Florida publishes this at 3 semester hours through the Department of Biology, College of Science and Engineering.

⚠ This course is not in the statewide priority inventory and had no guide until now; it is written because it disposes of the queued PCB4723C, which UWF does not publish, and because its laboratory PCB4723L is queued and names this course.

The word that carries the course is "comparative." A human physiology course describes one solution; this one asks why different animals solved the same problem differently, and what the differences reveal about the constraints. Gas exchange in a fish gill, an insect tracheal system and a mammalian lung are three answers to one question — and the comparison teaches the principle better than any single case.

⚠ This is the least demanding prerequisite of the upper-division PCB courses at UWF — only BSC 2011/L, with no chemistry requirement, where Cell Biology, Immunology and Molecular Biology all require organic chemistry or biochemistry. That makes it accessible earlier in a degree than its 4000-level number suggests.

Note also where the fee falls: UWF assesses the material and supply fee for the corresponding laboratory, not for this lecture.

⚠ Why this guide exists under this number

Many Florida institutions carry this material as a single integrated C course. UWF runs a separate lecture and laboratory, each with its own SCNS number, and this guide documents the UWF lecture. Its laboratory partner is documented separately in this repository. ⚠ SCNS equivalency does not cross numbers, so transfer between the integrated and split forms is evaluated by hand — carry a syllabus in either direction.

⚠ The contact-hour figure is derived — the University of West Florida publishes none

UWF's catalog publishes a credit value in semester hours, the college and department, prerequisites and co-requisites, and fee notices. It does not publish contact hours, a lecture and laboratory split, or terms of offering for any course. Every contact-hour value in a UWF guide in this repository is derived. The figure applies the standard lecture convention of 15 contact hours per credit, giving 45 hours for 3 semester hours. Confirm the meeting schedule with the department.

Learning Outcomes

Required Outcomes

• Describe the principles of homeostasis and physiological regulation.
• Compare conforming and regulating strategies across animal groups.
• Describe feedback control in physiological systems.
• Describe cellular and membrane physiology underlying excitability.
• Describe nerve function, action potentials, and synaptic transmission.
• Compare nervous system organisation across animal groups.
• Describe sensory reception and transduction across modalities.
• Describe muscle structure and the mechanism of contraction.
• Compare locomotion and its energetic costs across animals.
• Describe endocrine regulation and hormone mechanisms.
• Compare respiratory strategies including gills, tracheae, and lungs.
• Describe gas transport and respiratory pigments.
• Compare circulatory system designs and their consequences.
• Describe digestion and nutrient absorption across diets.
• Describe metabolism, metabolic rate, and its scaling with body size.
• Compare osmoregulation and excretion in fresh water, sea water, and land.
• Describe nitrogenous waste strategies and their water costs.
• Describe thermoregulation and compare ectothermy with endothermy.
• Describe reproductive and developmental physiology across groups.
• Relate physiological strategy to environment and evolutionary history.

Optional Outcomes

• Read and interpret a primary research paper in the field.
• Relate the material to a Florida ecosystem, organism, or health problem.
• Describe current research directions in the area.
• Describe how the material supports graduate or professional study.
• Seek undergraduate research experience related to the topic.

Major Topics

Required Topics

• Homeostasis and regulation
• Conformers and regulators
• Feedback control
• Cellular and membrane physiology
• Nerve function and synaptic transmission
• Comparative nervous system organisation
• Sensory reception and transduction
• Muscle and contraction
• Locomotion and its costs
• Endocrine regulation
• Comparative respiration
• Gas transport and respiratory pigments
• Comparative circulation
• Digestion and absorption
• Metabolism and metabolic scaling
• Osmoregulation and excretion
• Nitrogenous waste strategies
• Thermoregulation
• Reproductive and developmental physiology
• Physiology, environment, and evolution

Optional Topics

• Primary literature
• Florida applications
• Current research directions
• Graduate and professional preparation
• Undergraduate research

Resources & Tools

• A comparative physiology text — Hill, Wyse and Anderson's Animal Physiology or Randall, Burggren and French's Eckert Animal Physiology; whichever the instructor assigns.
• Schmidt-Nielsen's Animal Physiology: Adaptation and Environment — older, and still the clearest writing in the field on scaling and on why animals are built the way they are.
• The Journal of Experimental Biology — accessible through the UWF library; the discipline's primary journal, and its "Inside JEB" summaries are readable at undergraduate level.
• Florida's own fauna as case material — free; manatee thermal biology, sea turtle salt glands, estuarine osmoregulation and alligator cardiac physiology are all locally relevant and all well documented.
• Comparative Physiology sections of the American Physiological Society — free resources; teaching materials and career information.
• NCBI (ncbi.nlm.nih.gov) — free; PubMed, GenBank, BLAST and the rest of the toolkit, used professionally rather than only pedagogically.
• A UWF librarian — included in enrolment; an hour on database searching pays for itself across a whole degree.

Career Pathways

• Biological technicians — SOC 19-4021; the common direct entry point with a bachelor's degree.
• Biological scientists — SOC 19-1020; ⚠ independent research roles generally require a doctorate, and this is worth knowing early rather than late.
• Medical and clinical laboratory technologists — SOC 29-2011; ⚠ note that Florida licenses clinical laboratory personnel, so a biology degree alone does not permit bench work in a clinical laboratory — see the MLS prefix guides.
• Biotechnology and pharmaceutical industry — research associate, quality control and manufacturing roles; molecular technique competence is the entry currency.
• Environmental and conservation science — SOC 19-2041; Florida Fish and Wildlife Conservation Commission, water management districts, the Florida Department of Environmental Protection, and consulting firms.
• Marine and coastal science — a genuine Florida strength, including NOAA, Florida Sea Grant, Mote Marine Laboratory and the estuarine programmes on the Gulf coast near UWF.
• Public health laboratories — the Florida Department of Health Bureau of Public Health Laboratories.
• Science teaching — SOC 25-2031; ⚠ Florida K-12 teaching requires state certification that a biology degree alone does not provide.
• Professional and graduate pathways — medicine, dentistry, veterinary medicine, physician assistant, pharmacy, and research doctorates. This prefix is the core of a pre-health undergraduate plan.
• ⚠ An honest note on laboratory experience. Coursework laboratories are necessary and not sufficient — undergraduate research with a faculty member is what distinguishes a competitive graduate or professional applicant, and it is arranged by asking, usually earlier than students think.

Special Information

⚠⚠ PCB4723 and PCB4723L — how the pair is bound

• UWF publishes a Co-requisite: PCB4723 field on the laboratory entry. The lecture does not name the laboratory in return, so the binding runs one way — a student can take the lecture without the laboratory.
• ⚠ Many Florida institutions carry this material as a single integrated C course. UWF splits it into separately numbered lecture and laboratory, and SCNS equivalency does not cross numbers — so transfer between the two forms is evaluated by hand. Carry a syllabus in either direction.
• Take them together where the department intends it. The laboratory is designed to run alongside the lecture topics.
• ⚠ Budget for the pair. It is 4 semester hours in total, not 3, and the laboratory carries its own scheduled session.

⚠ A laboratory fee is assessed

• ⚠⚠ UWF publishes the fee notice on THIS entry but states it applies "for the corresponding lab." That is worth reading carefully — the charge attaches to the laboratory enrolment, and the notice appears on the lecture. A student reading only the laboratory entry may not see it announced there.
• The amount is in the catalog's separate Material & Supply and Equipment Fees section. ⚠ Budget for it — laboratory fees are billed with tuition and are invisible when a term's cost is estimated from credit hours alone.
• Ask the department for the cumulative total across a term of laboratory courses, since a science student commonly takes more than one.

⚠ Offered concurrently with the graduate PCB5727

• UWF teaches this alongside PCB5727, with graduate students assigned additional work. The pattern is routine at UWF and is confined to 4000-level courses across the corpus.
• The effect on an undergraduate is a section with graduate students in it and reading pitched to work at both levels. Undergraduate requirements are lower by design — the differential is in the additional graduate work.
• ⚠ For a student considering graduate study it is a useful preview, and the instructor sees you working next to the standard you would be held to.

⚠⚠ The asterisk in a UWF prerequisite means the course may be taken at the same time

• UWF marks a concurrent course with an asterisk, defined on the catalog's Course Information page as: "This course may be taken prior to or during the same term."
• ⚠ A prerequisite written WITHOUT an asterisk must be completed first; one written WITH an asterisk may be taken in the same term. Reading an asterisked prerequisite as sequential adds a term for no reason.
• UWF also uses an explicit Co-requisite: field, which is the stricter form — conventionally meaning the same term rather than prior-or-same. Both notations appear in this prefix.
• Confirm with an advisor; the registration system, not the catalog text, is what enforces it.

⚠⚠ Biology laboratory safety

• Know the location of the eyewash, safety shower, fire extinguisher and spill kit before you start work. That is a real instruction rather than a formality.
• ⚠ Eye protection and a lab coat are required, closed shoes are required, and never eat, drink or store food in a laboratory.
• Microbiological work is conducted at the containment level the organism requires, and ⚠ cultures are never opened outside the appropriate containment. Everything is autoclaved or disinfected before disposal.
• ⚠⚠ Human tissue, blood and body fluids are handled under Standard Precautions and are treated as infectious regardless of source. Sharps go into a sharps container at the point of use, and needles are never recapped by hand.
• Chemical hazards are real in a molecular laboratory — some nucleic acid stains and fixatives are mutagenic or carcinogenic, and phenol and chloroform cause chemical burns. Read the safety data sheet before first use, not after.
• ⚠ Ultraviolet transilluminators cause eye and skin burns; use the shield.
• Report every spill, cut and exposure immediately, however minor it seems.
• Tell the instructor if you are pregnant or immunocompromised; several standard laboratory materials and organisms warrant substitution.

Course format and position in the curriculum

• Lecture with examinations and problem work.
• ⚠ No "permission is required" marking appears anywhere in the PCB prefix, unlike UWF's clinical health prefixes — enrolment is gated by prerequisites rather than by cohort admission.
• UWF publishes no contact hours, lecture and laboratory split, or terms of offering for any course. Confirm the offering pattern with the department.

How Florida course levels affect transfer

The first digit of an SCNS number denotes the year of offering, not transferability. Courses at the 1000 and 2000 levels transfer transparently between Florida public institutions, and 3000 to 4000 is unproblematic since both are upper division. The boundary that actually matters is 2000 to 3000, where lower-division credit generally cannot satisfy an upper-division requirement. ⚠ For biology the specific transfer hazard is the split-versus-integrated question: UWF numbers lecture and laboratory separately where many institutions use one C course, and SCNS equivalency does not cross numbers. Carry a syllabus, and expect a transfer evaluation of either half to be done by hand.

PCB4723 is 3 semester hours at the University of West Florida.