5 Written questions
5 Matching questions
- Essential Nutrients
- Graded Potential
- Myelinated Sheath
- Sarcoplasmic Reticulum
- a In a neuron, a shift in the membrane potential that has an amplitude proportional to signal strength and that decays as it spreads.
- b A specialized endoplasmic reticulum that regulates the calcium concentration in the cytosol of muscle cells
- c A substance that an organism cannot synthesize from any other material and therefore must absorb in preassembled.
- d A change in a cell's membrane potential such that the inside of the membrane becomes more negative relative to the outside. Hyperpolarization reduces the chance that a neuron will transmit a nerve impulse.
- e Wrapped around the axon of a neuron, an insulating coat of cell membranes from Schwann cells or oligodendrocytes. It is interrupted by nodes of Ranvier, where action potentials are generated
5 Multiple choice questions
- The membrane potential characteristic of a nonconducting excitable cell, within the inside of the cell more negative than the outside
- The regulatory protein that control the position of tropomyosin on the thin filament.
- An efferent branch of the vertebrate peripheral nervous system that regulates the internal environment; consists of the sympathetic, parasympathetic, and enteric divisions.
- The short time immediately after an action potential in which the neuron cannot respond to another stimulus, owing to the inactivation of voltage-gated sodium channels
5 True/False questions
Sympathetic Division → One of the tree divisions of the autonomic nervous system; generally increases energy expenditure and prepares the body for action (Fight or Flight) - causes increase in heart rate, breathing, slows digestion, liver releases glucose, inhibits emptying of bladder, releases adrenaline from adrenal medulla situations:(emergency, embarrassment, exercise, excitement)
Tropic Hormones → ...
Basal Metabolic Rate (BMR) → The metabolic rate of a resting, fasting and non stressed endotherm at a comfortable temperature.
Parasympathetic Division → One of the three divisions of the autonomic nervous system, generally enhances body activities that gain and conserve energy, such as digestion and reduced heart-rate, decrease breathing, storing glycogen for energy in the liver
Interstitial Fluid → One of the three divisions of the autonomic nervous system; consists of networks of neurons in the digestive tract, pancreas, and gall bladder; normally regulated by the sympathetic and parasympathetic divisions of the autonomic nervous system. (secretions + peristalsis can function independently from parasympathetic and sympathetic but can also be affected by it)