Getting on my Nerves
Schwann Cells and Oligodendrocytes are wrapped in this structure, that helps speed along neural impulses.
Myelin Sheath
nearsightedness, where distant objects appear blurry due to light focusing in front of the retina instead of on it, is also called _____
Myopia
Apocrine sweat glands are found in what parts of the body?
The epiphyseal disk can also be referred to as the “_____”
Growth plate
The phase of in a cell’s life where it undergoes rapid growth and genetic replication.
Interphase
When a neuron depolarizes, an ion is moving which way relative to the cell (into or out of), and what is the ion?
Sodium (Na+) moves into the cell
Stereoscopic vision is the physiological term for what type of perception?
Depth
Ceruminous glands are an example of modified _____ glands.
Eccrine
The basic functional unit of bone structure is called an “_____”
Osteon
The phase in which the genetic material lines up along the middle of the cell body.
Metaphase
What are the two factors that affect the speed at which a neuron carries an impulse?
Diameter of the axon & myelination
The “blind spot” results from the lack of photoreceptors on what structure in the eye?
Optic disc
Mitosis would occur in what layer of the epidermis?
Stratum basal
Calcitonin is excreted by the _____ and lowers blood calcium levels.
Thyroid
What phase of mitosis sees the genetic material separate and migrate to each half of the cell?
Anaphase
The movement of ions across the membrane of a neuron during depolarization is accomplished by what method of transportation?
Diffusion
“Specialized _____ cells” are associated with the special senses.
Epithelial
The stratum corneum contains dead skin cells with the addition of this substance.
Keratin
What type of cell is responsible for building bone?
Osteoblasts
What type of cells are almost always in the G0 phase?
Neurons
What is it called when too much potassium ions leave the cell after an impulse is fired?
Hyperpolarization
Vision, hearing, taste, smell, balance
Name the three chemicals responsible for skin pigmentation
Melanin, carotene, hemoglobin
What is the name of the hormone secreted into the body to increase blood calcium levels?
Parathyroid hormone (PTH)
What phase does the chromatin condense into a more organized form of genetic material, and what is this material called?
Prophase, chromosomes