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Test CH10/11/12

TermDefinition
Groups of muscles are separated by which of the following? FASCIA
The outermost layer of connective tissue of a muscle is the EPIMYSIUM
The rectus abdominis is a _________blank muscle, while the rectus femoris is a _________blank muscle. PARALLEL & BIPENNATE
Which muscle has this type of fascicle orientation? BIPENNATE
A skeletal muscle generates the greatest tension when it is _________blank. partially stretched BEFORE being stimulated
A muscle twitch produces external tension and moves an object by shortening the muscles during the _________blank phase. CONTRACTION
What happens when acetylcholine stimulates its receptors in the neuromuscular junction? ACETYLCHOLINE & RECEPTORS
A skeletal muscle fiber (cell) contains a single nucleus. T OR F FALSE
Shortening a muscle while it maintains constant tension is called _________ complete tetanus
Plasma membrane of a muscle fiber SARCOLEMMA
If one nerve stimulus arrives at a muscle fiber so soon that the fiber does not relax at all from the previous twitch, the most likely result will be __________. COMPLETE TETANUS
Which of the following best describes the resting membrane potential (RMP)? The intracellular environment is negatively charged
Which of the following marks the boundaries of a sarcomere? Z discs
Most metabolic and regulatory functions in a neuron happen where? SOMA
Conduction of a nerve impulse would be the fastest in which of the following? A large diameter myelinated fiber
While both systems maintain homeostasis, how does the nervous system differ from the endocrine system? The nervous system releases neurotransmitters between cells, while the endocrine system releases hormones into the blood.
The _________blank division carries signals to the smooth muscle in the large intestine. VISCERAL MOTOR
Which o?f the following are effectors GLANDS
An inhibitory local potential causes which of the following? HPERPOLARIZATION OF THE PLASMA MEMBRANE
All of the following are typical characteristics of neurotransmitters except _________blank. they are released into the bloodstream before reaching the postsynaptic cell.
Local potentials are _________blank, meaning they vary in magnitude according to the strength of the stimulus. Graded potentials
When the voltage of a plasma membrane shifts from +35 mV toward 0 mV, the cell is ______ REPOLARIZING
In order to regenerate, a PNS axon must have which of the following? The neurosoma and at least some neurilemma intact.
The nervous system employs exclusively electrical means to send messages, whereas the endocrine system communicates by means of chemical messengers. T OR F FALSE
A neuron can receive thousands of EPSPs from different neurons, and responds by triggering or not triggering an action potential. This addition and response to the net effect of postsynaptic potentials is called ________ SPATIAL SUMMATION
The opening of _________blank gates produces an _________ CHLORIDE / IPSP
In a neuron, the opening of sodium gates typically leads to _______ The opening of the **sodium channel/gates**
Which of the following is most likey to cause a rapid depolarization? ACTION POTENTIAL
Local potentials are _________blank, whereas action potentials are _________blank. GRADED / ALL OR NONE
A myelin sheath is composed primarily of _________blank. LIPIDS
What causes hyperpolarization of a neuronal membrane? The sodium and potassium channels are open at the same time.
Which of the following will cause the plasma membrane to hyperpolarize when at its RMP? INFLOW OF CHLORIDE
Nerves are _________blank of the nervous system. organs
What type of neural circuit is best for producing a prolonged output? A reverberating circuit
Any two EPSPs will override one IPSP. TRUE OR FALSE FALSE
Some _________blank neurons are specialized to detect stimuli, whereas _________blank neurons send signals to the effectors of the nervous system. afferent; efferent
muscles attaches on the head of the fibula?
Created by: cfinnie93
 

 



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