Organization
This term refers to a body part located closer to the head.
What is superior?
This is the outermost layer of the skin.
What is the epidermis?
These bones protect the heart and lungs.
What are the ribs?
This is the type of muscle responsible for voluntary movements.
What is skeletal muscle?
These are the basic functional units of the nervous system.
What are neurons?
This directional term means "toward the midline of the body."
What is medial?
This vitamin is synthesized in the skin with the help of sunlight.
What is vitamin D?
This bone is also known as the collarbone.
What is the clavicle?
This type of muscle is found in the walls of internal organs.
What is smooth muscle?
The long extension of a neuron that transmits signals away from the cell body.
What is the axon?
This term means "farther from the point of attachment" in limbs.
What is distal?
This term describes the process where keratinocytes move up through the layers and become tough and waterproof.
What is keratinization?
These bones form the wrist.
What are the carpals?
These structures connect cardiac muscle cells and help transmit impulses.
What are intercalated discs?
This structure connects the brain to the spinal cord.
What is the brainstem?
This specific sagittal plane divides the body exactly at the midline.
What is the midsaggital plane?
The layer of fat beneath the dermis that insulates and cushions the body.
What is the hypodermis or subcutaneous layer?
This type of joint allows for the widest range of motion.
What is a ball-and-socket joint?
Smooth muscle contractions in the digestive tract are called this.
What is peristalsis?
These nerves carry messages from the body to the brain.
What are sensory (afferent) nerves?
This plane divides the body into anterior and posterior sections.
What is the frontal/coronal plane?
These structures are responsible for sensing deep pressure and vibration.
What are Pacinian corpuscles?
This substance covers the ends of bones at synovial joints.
What is articular cartilage?
This neurotransmitter is released at the neuromuscular junction.
What is acetylcholine (ACh)?
The division of the peripheral nervous system that controls involuntary body functions.
What is the autonomic nervous system?