ATI TEAS Anatomy & Physiology: What You Need to Know

What ATI officially confirms

Human Anatomy & Physiology is one of four ATI TEAS 7 Science content areas. ATI allocates 18 scored items to A&P within the 50-item Science section. That weighting makes it useful to test one body-system relationship in Passy → before you expand the review.

That allocation tells you A&P deserves consistent preparation. It does not reveal exact live items, guarantee that every body system appears in the same way, or support a list of “questions you will see.”

Use the official boundary to practice ATI TEAS A&P through structure-and-function relationships in Passy →, not recalled live-item lists.

How to organize A&P review

For each system, study four layers:

1. structures: the organs, tissues, or pathways involved.
2. functions: what each major structure contributes.
3. regulation: how the system is controlled or adjusted.
4. connections: how it works with other systems to preserve homeostasis.

This creates a reusable model. A question may name an organ, describe a process, or ask what follows from a change in function.

Major systems to review

Cardiovascular and respiratory

Trace blood through the heart, pulmonary circuit, and systemic circuit. Know the roles of arteries, veins, capillaries, and blood components. Connect ventilation with gas exchange at the alveoli and transport by the blood.

Digestive and urinary

Follow mechanical and chemical digestion, nutrient absorption, and the roles of accessory organs. For the urinary system, connect filtration, reabsorption, secretion, fluid balance, and waste removal.

Nervous and endocrine

Compare rapid neural signaling with hormone-based regulation. Review major nervous-system divisions, neuron communication, feedback loops, and how endocrine glands contribute to homeostasis.

Muscular and skeletal

Connect bone structure, joints, and muscle contraction to support and movement. Review how skeletal, smooth, and cardiac muscle differ in location and control.

Immune, lymphatic, and integumentary

Understand physical barriers, innate and adaptive responses, lymph movement, and broad roles of immune cells. Connect skin structure with protection, temperature regulation, and sensation.

Reproductive

Review male and female reproductive structures, gamete production, hormonal regulation, fertilization, and foundational development concepts at the level described by the current outline.

Use relationships instead of isolated facts

Turn notes into cause-and-effect prompts:

• If alveolar surface area decreases, what happens to gas exchange?
• If insulin availability falls, what happens to blood glucose regulation?
• If kidney filtration changes, which balance functions are affected?
• Which system carries a hormone from its gland to a target tissue?

This is more useful than rereading labels without testing what they mean. The ATI TEAS Science study guide shows how A&P fits with Biology, Chemistry, and Scientific Reasoning. When a cause-effect link stays fuzzy, revisit that A&P relationship in Passy →.

A simple study method

For one system at a time:

1. draw or trace the main pathway from memory.
2. label each structure with a function.
3. describe one feedback or regulation mechanism.
4. connect the system to at least one other system.
5. answer application questions.
6. correct missed relationships and revisit them later.

The free ATI TEAS practice set includes an original A&P item within a broader four-section sample. Use it to test one structure-function relationship before expanding to a full system map.

Common study traps

• Memorizing labels only: a labeled diagram is useful, but function and interaction make it transferable.
• Studying one system in isolation: homeostasis depends on connected systems.
• Treating every detail as equal: begin with major structures, pathways, and regulatory relationships.
• Using recalled live-item lists: they are not an official outline and may be inaccurate or unauthorized.

Map your weakest body system

Choose the body system you can explain least clearly. Build a one-page structure-function map, test it without notes, and add one cross-system connection. Then turn the weak relationship into focused practice in Passy →.