PHYSCI 165

Comparative Animal Physiology

Physiological Science · 5 units · Undergraduate upper division (100-199)

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Physiological response and function at molecular, cellular, system, and whole organism levels of variety of animals to range of environmental conditions. Major topics include neural and muscular structure and function, hormones, gas exchange, energetics, and thermoregulation. Examination of wide variety of vertebrates and invertebrates to understand how animals solve physiological challenges presented by physical environment.

Letter grading.

When it runs

Fall 2026

Scheduled, not typical — from UCLA’s Schedule of Classes, which publishes Fall 2025 through Spring 2027 and nothing before it.

Checking the Schedule of Classes…

Requisites

Official UCLA wording
Requisites: Life Sciences 1, 2, 3, and 23L, or 7A, 7B, 7C, and 23L.

BruinTree reads · Prerequisite

needs reviewconfidence 0.45 · from text

one of

all of
all of

· "LIFESCI 1" is not in this catalog version
· "LIFESCI 2" is not in this catalog version
· "LIFESCI 3" is not in this catalog version
· "LIFESCI 23L" is not in this catalog version
· "LIFESCI 23L" is not in this catalog version
· mixed comma-level AND/OR in "Life Sciences 1, 2, 3, and 23L, or 7A, 7B, 7C, and 23L" — grouping is a best reading

Requires

Everything that has to come before this course, not just the courses named in the requisite above.

PHYSCI 165

LIFESCI 7ACell and Molecular Biology
LIFESCI 7BGenetics, Evolution, and Ecology
- LIFESCI 7ACell and Molecular Biologyanother path to it
LIFESCI 7CPhysiology and Human Biology
- LIFESCI 7BGenetics, Evolution, and Ecologyanother path to it

Unlocks

What this course is a requisite for, and what those courses lead to in turn.

No course in the catalog lists this as a requisite.