(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?

(02.04 HC)If the insertion of the gastrocnemius muscle was at the distal end of the fibula instead of the calcaneus (bone in the heel of the foot), how would the movement of the foot most likely change?

(02.01 LC)Examine the image below.© 3DScience.com 2013Which letter is pointing to the triceps brachii muscle?

(01.04 MC)In the skin, the epidermis can be compared to which of the following?

(03.01 MC)Samuel is cleaning up storm debris and encounters a large spider. He shouts and moves away from the spider, and he feels his heart rate increase. After a few minutes, he begins to calm down and his heart rate returns to normal. Which part of the nervous system is responsible for decreasing his heart rate back to homeostasis and causing him to calm down?

(02.01 MC)Tate fractured his cranium while skateboarding. During which of the following activities would you expect him to experience the most pain from his broken bone?

(03.02 LC)The cerebellum controls

(03.01 LC)The somatic nervous system controls ________ responses of the body.

(02.01 LC)Which of the following are the three main bones that make up the arm?

(03.01 LC)The autonomic nervous system controls all ________ responses of the body.