ATI TEAS SCIENCE STUDY GUIDE ATI TEAS 6 SCIENCE
STUDY TESTS FOR THE 6TH EDITION EXAM [INCLUDES
DETAILED ANSWER EXPLANATIONS]
### 1. What is the anatomical position of the body?
a. Lying down with arms at the side and palms facing down
**b. Standing with feet together, arms to the side, with head, eyes, and palms of hands forward**
c. Sitting with legs crossed and arms folded
d. Kneeling with arms raised above the head
### 2. What are cells?
a. The smallest organ in the body
**b. The basic structural unit of an organism from which living things are created**
c. A group of tissues functioning together
d. The specialized part of a cell
### 3. What are cellular functions?
a. The process of cell division
**b. Processes that include growth, metabolism, replication, protein synthesis, and movement**
c. The process by which cells communicate
d. The process of organ development
### 4. What is directional terminology?
a. Terms used to describe bodily movements
**b. Words used to explain relationships of locations of anatomical elements (distal, posterior,
medial)**
c. Descriptions of bodily functions
d. Terms used to identify organs and systems
### 5. What are organ systems?
a. A group of cells functioning together
b. Individual organs that function independently
**c. Functional groups of organs that work together within the body (e.g., circulatory, integumentary,
skeletal, reproductive, digestive, urinary, respiratory, endocrine, lymphatic, muscular, nervous)**
d. Parts of the cell with specific functions
### 6. What is an organelle?
a. A group of tissues
**b. A specialized part of a cell that has a specific function**
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c. A small organ within the body
d. A system of organs working together
### 7. What is an organ?
**a. A self-contained part of an organism that performs a specific function**
b. A structure within a cell
c. A type of tissue found in the body
d. A small part of a cell
### 8. What are reference planes?
**a. Planes dividing the body to describe locations: sagittal, coronal, and transverse**
b. Lines used to describe organ locations
c. Directions in which the body can move
d. Points of reference on the body surface
### 9. What is tissue?
a. A collection of organs
b. A type of muscle
**c. A group of cells with similar structure that function together as a unit, but at a lower level than
organs**
d. A part of the circulatory system
### 10. What are arteries?
a. Vessels that carry oxygenated blood to the lungs
**b. Blood vessels that deliver blood from the heart to other parts of the body**
c. Small vessels that connect arterioles to venules
d. Vessels that carry deoxygenated blood to the heart
### 11. What is a capillary?
a. A large blood vessel
b. A vessel that carries blood away from the heart
**c. A small blood vessel that connects arterioles to venules**
d. A blood vessel that carries blood to the lungs
### 12. What is diastole?
**a. The portion of the cardiac cycle in which the heart refills with blood**
b. The phase of the heart cycle where blood is expelled
c. The period of heart muscle contraction
d. The time between heartbeats
### 13. What is the heart?
a. The organ that filters blood
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b. A type of blood vessel
**c. The muscle that pumps blood throughout the body**
d. A nerve center in the chest
### 14. What is hemoglobin?
a. A type of white blood cell
**b. The protein in red blood cells that carries oxygen from the lungs to the rest of the body**
c. A component of plasma
d. A type of lymphocyte
### 15. What are leukocytes?
**a. White blood cells, which protect the body against disease**
b. Cells that carry oxygen
c. Platelets involved in clotting
d. Plasma cells that fight infections
### 16. What is lymph?
a. A type of blood cell
**b. Clear fluid that moves throughout the lymphatic system to fight disease**
c. A hormone produced by the immune system
d. A component of the central nervous system
### 17. What is a lymphocyte?
**a. A subtype of white blood cell found in lymph**
b. A type of red blood cell
c. A plasma protein
d. A blood clotting factor
### 18. What is plasma?
a. A type of cell in the immune system
b. A component of the nervous system
**c. The pale yellow component of blood that carries red blood cells, white blood cells, and platelets
throughout the body**
d. A form of protein in muscles
### 19. What is systole?
**a. The portion of the cardiac cycle in which the heart expels blood**
b. The phase of the heart cycle where the heart relaxes
c. The period of blood refilling
d. The time between contractions