(03.05 MC)A chemical signal that travels across a synapse to an effector organ is part of the ________ system, while a chemical signal that passes through the membrane of target cells to manipulate the DNA is part of the ________ system.

(02.01 LC)The ________ is the main bone that makes up the skull.

(01.01 LC)Which of the following is most likely an observation made by a physiologist?

A nurse is teaching the family of a client newly prescribed donepezil (Aricept) for early-stage Alzheimer’s disease. Which statement by the family indicates understanding of the medication’s purpose?

(03.02 LC)What part of the brain is responsible for conscious thinking and decision-making?

(02.05 LC)According to the sliding filament theory, ________ molecules are present when a muscle is in a relaxed state.

(02.01 LC)The axial skeleton includes bones such as the

(02.04 LC)Which type of muscle tissue forms the lining for many organs?

(03.04 MC)During which part of the nerve impulse does the slightly negative charge inside the neuron switch to an overall positive charge?

(03.03 HC)A pregnant person opts to have an epidural during labor to prevent intense pain. An epidural is a procedure that injects numbing medication directly into the space around the spinal nerves in a specific location in the spine, usually the lumbar region for childbirth. People with an epidural are still able to sit up, stay awake, and talk to others, but they cannot walk or feel anything from the waist down. Thinking about the parts and functions of the nervous system, which of the following is the best explanation of how the epidural works?