Integumentary System
This pigment gives a variety of colors to the skin by absorption of UV light.
melanin
These cells found on the surface form new bone.
osteoblasts
Muscles attach to bones by either fleshy connections or _____.
tendons
The Central Nervous System is made of the spinal cord and the _______.
brain
When the body is ___, the blood vessels rise to the surface.
hot/warm
This outer layer of skin functions as a barrier and tool for keeping someone hydrated.
epidermis
This protein gives strength, stability, and resilience to the bone.
collagen
This neurotransmitter is released into the synaptic cleft, beginning muscle contraction.
acetylcholine (Ach)
This region of the brain coordinates movement and balance in the body.
cerebellum
Another name for a growth plate is a ______ plate.
epiphyseal plate
This degree of burn destroys the epidermis and dermis and destroys nerve endings.
3rd degree burn
The elbow and knee are examples of a _____ joint.
synovial
While muscles for speed have parallel fibers, power muscles have ______ fibers.
diagonal
This involuntary process within the Autonomic Nervous System is also known as the “fight or flight” reaction.
sympathetic system
These branched-out formations on the ends of neurons receive action potential/signals.
dendrites
Sweat glands, or ______, are found throughout the body and are meant to regulate body temperature.
eccrine glands
Intermembranous bones form membranous cartilage, while endochondral forms _____ cartilage.
hyaline
The ____ _____ of the quadriceps flexes the hip and extends the knee.
rectus femoris
Once the axon membrane potential becomes repolarized, it becomes quickly ______ before returning to its resting state.
hyperpolarized
These muscle fibers are fast oxidative and more prone to fatigue.
type 2a
These groups of cells rest under the hair follicle strengthen the dermis layer, as well as promote hair follicle development.
dermal papilla
This condition results from low levels of blood calcium, forcing the bones to release calcium and become brittle.
osteoporosis
This stiffness in the muscles, post-death, is due to the absence of ATP, leaving the muscle temporarily contracted.
rigor mortis
After the neurotransmitter binds to receptors in the postsynaptic neuron, it can either be broken by an enzyme, diffused, or return to the presynaptic neuron through ________.
reuptake
While the myosin and actin filaments do not shorten, the ______ reduce as the muscle contracts.
i-bands