NAS 2 CHALLENGE END OF COURSE EXAMS QUESTIONS
AND ANSWERS GUARANTEE A+ 2025/2026
✔✔The Three Major Body Planes/Sections: Sagittal - ✔✔a vertical line which divides
the body into a left section and a right section
✔✔The Three Major Body Planes/Sections: Frontal/Coronal - ✔✔a vertical line which
divides the body into a front (anterior) section and back (posterior) section
✔✔The Three Major Body Planes/Sections: Transverse - ✔✔a horizontal line which
divides the body into an upper (superior) section and a lower (inferior) section
✔✔Human Body Major Cavities - ✔✔dorsal body cavity
ventral body cavity
✔✔Dorsal Body Cavity - ✔✔where the brain and spinal cord are located
✔✔Ventral Body Cavity - ✔✔in the anterior (front) aspect of the human body
contains the thoracic cavity, and the abdominopelvic cavity
✔✔Abdominopelvic Cavity - ✔✔contains the abdominal cavity and pelvic cavity, but
there is no physical barrier between the two
✔✔Eleven Human Organ Systems - ✔✔integumentary system
skeletal system
muscular system
lymphatic system
respiratory system
digestive system
nervous system
endocrine system
cardiovascular system
urinary system
reproductive systems
✔✔integumentary system - ✔✔consists of the skin, hair, nails, and exocrine glands
✔✔skeletal system - ✔✔includes all of the bones and joints in the body
✔✔muscular system - ✔✔an organ system consisting of skeletal, smooth and cardiac
muscles
allows movement of the body
, ✔✔lymphatic system - ✔✔a network of tissues and organs that help rid the body of
toxins, waste and other unwanted materials
✔✔respiratory system - ✔✔the network of organs and tissues that help you breathe
which includes your airways, lungs, and blood vessels
✔✔digestive system - ✔✔GI tract hollow organs: the mouth, esophagus, stomach, small
intestine, large intestine, and anus
digestive system solid organs: liver, pancreas, and gallbladder are the solid organs of
the digestive system.
✔✔nervous system - ✔✔the network of nerve cells and fibers which transmits nerve
impulses between parts of the body
✔✔endocrine system - ✔✔a chemical messenger system comprising feedback loops of
the hormones released by internal glands of an organism directly into the circulatory
system, regulating distant target organs
✔✔cardiovascular system - ✔✔an organ system that permits blood to circulate and
transport nutrients, oxygen, carbon dioxide, hormones, and blood cells to and from the
cells in the body to provide nourishment
✔✔urinary system - ✔✔consists of the kidneys, ureters, bladder, and the urethra
✔✔reproductive systems - ✔✔woman: includes the ovaries, the fallopian tubes, the
uterus, the cervix, and the vagina
men: includes the prostate, the testes, and the penis
✔✔Potential Energy - ✔✔stored energy
✔✔Kinetic Energy - ✔✔energy of motion
✔✔Atomic Symbol - ✔✔an abbreviation for an element or atom
✔✔Atomic Number - ✔✔the number of protons in the nucleus of an atom
✔✔Atomic Mass - ✔✔the average mass of all the isotopes of an element
✔✔Ion - ✔✔a charged atom
✔✔Isotope - ✔✔atoms of the same element that have different numbers of neutrons
✔✔Valence Shell - ✔✔outermost electron shell
AND ANSWERS GUARANTEE A+ 2025/2026
✔✔The Three Major Body Planes/Sections: Sagittal - ✔✔a vertical line which divides
the body into a left section and a right section
✔✔The Three Major Body Planes/Sections: Frontal/Coronal - ✔✔a vertical line which
divides the body into a front (anterior) section and back (posterior) section
✔✔The Three Major Body Planes/Sections: Transverse - ✔✔a horizontal line which
divides the body into an upper (superior) section and a lower (inferior) section
✔✔Human Body Major Cavities - ✔✔dorsal body cavity
ventral body cavity
✔✔Dorsal Body Cavity - ✔✔where the brain and spinal cord are located
✔✔Ventral Body Cavity - ✔✔in the anterior (front) aspect of the human body
contains the thoracic cavity, and the abdominopelvic cavity
✔✔Abdominopelvic Cavity - ✔✔contains the abdominal cavity and pelvic cavity, but
there is no physical barrier between the two
✔✔Eleven Human Organ Systems - ✔✔integumentary system
skeletal system
muscular system
lymphatic system
respiratory system
digestive system
nervous system
endocrine system
cardiovascular system
urinary system
reproductive systems
✔✔integumentary system - ✔✔consists of the skin, hair, nails, and exocrine glands
✔✔skeletal system - ✔✔includes all of the bones and joints in the body
✔✔muscular system - ✔✔an organ system consisting of skeletal, smooth and cardiac
muscles
allows movement of the body
, ✔✔lymphatic system - ✔✔a network of tissues and organs that help rid the body of
toxins, waste and other unwanted materials
✔✔respiratory system - ✔✔the network of organs and tissues that help you breathe
which includes your airways, lungs, and blood vessels
✔✔digestive system - ✔✔GI tract hollow organs: the mouth, esophagus, stomach, small
intestine, large intestine, and anus
digestive system solid organs: liver, pancreas, and gallbladder are the solid organs of
the digestive system.
✔✔nervous system - ✔✔the network of nerve cells and fibers which transmits nerve
impulses between parts of the body
✔✔endocrine system - ✔✔a chemical messenger system comprising feedback loops of
the hormones released by internal glands of an organism directly into the circulatory
system, regulating distant target organs
✔✔cardiovascular system - ✔✔an organ system that permits blood to circulate and
transport nutrients, oxygen, carbon dioxide, hormones, and blood cells to and from the
cells in the body to provide nourishment
✔✔urinary system - ✔✔consists of the kidneys, ureters, bladder, and the urethra
✔✔reproductive systems - ✔✔woman: includes the ovaries, the fallopian tubes, the
uterus, the cervix, and the vagina
men: includes the prostate, the testes, and the penis
✔✔Potential Energy - ✔✔stored energy
✔✔Kinetic Energy - ✔✔energy of motion
✔✔Atomic Symbol - ✔✔an abbreviation for an element or atom
✔✔Atomic Number - ✔✔the number of protons in the nucleus of an atom
✔✔Atomic Mass - ✔✔the average mass of all the isotopes of an element
✔✔Ion - ✔✔a charged atom
✔✔Isotope - ✔✔atoms of the same element that have different numbers of neutrons
✔✔Valence Shell - ✔✔outermost electron shell
