Body Systems
The skeletal system is made of what three things?
Bones, Joints, & Cartilage
Pseudostratified columnar has what key identifiable feature?
Cilia
What is the function of melanocytes?
Produce protective pigment, melanin
What is the first step of an action potential
Local potential depolarizes the plasma membrane to reach threshold
Phagocytosis does what?
eats cells
The muscular system functions are... (3)
-produce movement
-control body openings
-generate heat
What is the function of transistional epithelium tissue?
Stretching
What is the function of tactile cells?
light touch reception
What is the second step of an action potential?
Voltage gated NA+ channels activate, Na+ enter, and axon section depolarizes
Pinocytosis does what?
drinks cells
The nervous system is made of what?
Brain, Spinal cord, Nerves
Where can you find fibrocartilage?
intervertebral discs
What is the percentage of the reticular layer of the dermis
80%
What is the third step of an action potential?
Na+ channels inactivate and voltage gated K+ channels activate, and Repolarization begins
What gradient does active transport go?
Against
What is the cardiovascular system made of?
blood vessels & heart
What is the function of nervous tissue?
send and receive messages
What is the function of free nerve endings?
Pain, temperature, touch receptors
What is the fourth step of an action potential?
Na+ channels return to the resting state and repolarization continues.
What gradient does passive transport go?
With the gradient or low to high
The respiratory system is made up of...
Nasal cavity, pharynx, larynx, trachea, lungs
What is the function of dense irregular tissue?
Strength
What is the function of the Lamellar corpuscle?
responds to pressure & vibrations
What is the fifth step of an action potential?
The plasma membrane may hyperpolarize before K+ channels return to the resting state; after this, the plasma membrane returns to the resting membrane potential
Facilitated diffusion is passive or active?
Passive