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A&P final quiz questions
Terms in this set (56)
Which of the following statements is false?
Cells can have receptors for hormones or for neurotransmitters but not for both.
The many hormones secreted by endocrine tissues can be classified simply as ____ hormones.
Steroid or nonsteroid
The immediate effect of a steroid hormone on a cell is the:
transcription of DNA in the nucleus
Which of the following does not act as a second messenger for nonsteroid hormones?
- inositol triphosphate
- guanosine monophosphate
- calcium-calmodulin complex
- all the above act as second messengers
all the above act as second messengers
The common molecule from which all steroids hormones are derived is:
Which of the following is not a source of nonsteroid hormones?
-protein joined with a carbohydrate
-individual amino acids
The term down-regulation refers to the:
Reduction of the number of hormone receptors in a cell.
Endocrine glands may be made up of:
C-ducts leading to major arteries
D-both A and B
Both A and B
In comparison with the nervous system, the regulatory effects of the endocrine system are:
Slow to appear but long lasting
Which of the following is not a characteristic of the endocrine system?
chemical messenger travels a short distance
Target other endocrine glands and stimulate their growth and secretion
Hormones may be:
-all the above
All the above
Steroids are able to pass easily through a target cells plasma membrane because they are:
When a small amount of one hormone allows a second hormone to have its full effect, the phenomenon is called:
The plasma membrane of a muscle fiber is called the
The smallest contractile unit of muscle is a
___ muscle is also known as a striated muscle
The neurotransmitter(s) secreted at the motor end plates of skeletal muscles is(are):
Most body movements are ___ contractions.
Endurance training is also known as:
A contraction in which the tension within the muscle remains the same but the length changes is called a(n) ___ contraction.
Which of the following types of muscle tissue contains cells that have a single nucleus?
From smallest to largest, which of the following is the correct order of arrangement?
Myofliament, myofibril, fiber
A decrease in muscle size is termed:
Which of the following terms describes an isometric contraction?
Which structure functions to temporarily store calcium ions?
Which of the following is NOT a name for a muscle cell?
The thick myofilament of the skeletal muscles is made of:
Cells that produce myelin for cells outside the brain and spinal cord are the:
The tough fibrous sheath covering the whole nerve is called the:
A synapse is:
-a gap between neurons
-crossed by a chemical
-separates the axon end of one neuron from the dendrite of the next
-all of the above
All of the above
The resting neuron:
Has a slight positive charge on the exterior
When a section of the resting neuron is stimulated:
A-sodium ions rush into the cell
B-sodium ions rush out of the cell
C-the interior of the cell becomes slightly positive
D-both A and C
Both A and C
A synapse includes:
A very narrow synaptic cleft
Can diffuse back into the synaptic knob
The two principal divisions that make up the nervous system are the:
Peripheral and central
The two types of cells found in the nervous system are:
Neuron and gilia cells
The part of the neuron that carries impulses to the neuron cell body is the:
The part of the neuron that carries impulses away from the neuron cell body is the:
The types of neurons that carry impulses away from the brain and spinal cord are called:
A- motor neurons
B- sensory neurons
C- efferent neurons
D- both A and C above
Both A and C above
The types of neurons that carry impulses to the brain and spinal cord are called:
Cells that produce myelin for the cells of the brain and spinal cord are the:
The brain stem includes the:
Pons, midbrain,and medulla oblongata
The "vital centers" (the cardiac, respiratory, and vasomotor centers) are located in the:
The regulations of the sleep cycle, water balance, and the production of ADH occurs in the:
The coordination of muscle movement and the maintenance of equilibrium occur in the:
The right and left sides of the cerebrum are connected by the:
The ridges in the cerebrum are called:
The functions of the spinal cord include:
The primary reflex center
The tough outer layer of meninges is called the:
An efferent neuron carries impulses in the direction opposite that of:
A-a motor neuron
B-a sensory neuron
C-an afferent neuron
D-both B and C above
Both B and C above
Which structure is part of the diencephalon?
The lobe of the brain that deals with vision is the:
The lobe of the brain that contains the auditory area is the:
The nervous system and this are the two body-wide communication systems.
Which of the following considered part of the nervous system as a whole?
B-the spinal cord
D-all of the above are considered part of the nervous system as a whole
All of the above are considered part of the nervous system as a whole
This set is often in folders with...
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