Memmlers Chapter 8 The Muscular System
UPDATED Questions and CORRECT
Answers
There are ___ types of muscle tissue. - CORRECT ANSWER -3
smooth, cardiac, and skeletal
Where is Smooth Muscle located - CORRECT ANSWER - makes up the walls of the
hollow body organs and the blood vessel and respiratory passage way
Smooth muscle contracts___ and moves in ____ motions. - CORRECT ANSWER -
involuntarily, wavelike
What can regulate the diameter of an opening such as the central opening of a blood vessel and
produce contractions of hollow organs(like in the uterus)? - CORRECT ANSWER -
Smooth Muscle
Cardiac muscle is_____ and makes up the ____ wall. - CORRECT ANSWER -
involuntary, hearts
Cardiac Muscle is____ and has_____nucleus per cell and branching connections. - CORRECT
ANSWER - Striated, 1
What is the specialized membrane between cardiac muscle cells that allows electrical impulses to
travel rapidly through them creating contractions that are better coordinated? - CORRECT
ANSWER - Intercalated disks because they are "inserted between" the cells.
Which muscle cells appear heavily striated under a microscope? - CORRECT ANSWER -
Skeletal muscle
,____Cells are long and cylindrical. - CORRECT ANSWER - Skeletal Muscle cells
Why are skeletal muscle cells often referred to as fibers? - CORRECT ANSWER -
Because they are long compared to other cells
Skeletal muscle moves______. - CORRECT ANSWER - Voluntarily(It is under conscious
control)
Where is skeletal muscle located? - CORRECT ANSWER - Attached to bones and
produce movement at joints
Attached to other muscles in the abdomen
attached to the skin in the face
3 primary functions of skeletal muscle - CORRECT ANSWER - movement of the skeleton
maintenance of posture
Generation of heat
What is a byproduct of muscle cell metabolism? - CORRECT ANSWER - Heat
How are whole muscles formed? - CORRECT ANSWER - individual muscle fiber (cells)
are arranged in bundles(Fascicles) held together by fibrous connective tissue
Endomysium - CORRECT ANSWER - Deepest layer of connective tissue. Surrounds
individual fibers
Perimysium - CORRECT ANSWER - Connective tissue layer around each fascicle
Epimysium - CORRECT ANSWER - Connective tissue sheath that encases the entire
muscle.
, Forms the innermost layer of the deep fascia which encloses and defines a muscle
motor impulses - CORRECT ANSWER - Nerve impulses coming from the brain/spinal
cord that stimulate skeletal muscle contractions. Stimulate movement
Motor neurons - CORRECT ANSWER - nerve cells that carry motor impulses
Sensory Neurons - CORRECT ANSWER - nerve cells that carry sensory impulses.
Motor unit - CORRECT ANSWER - A single motor neuron and all the muscle fibers it
stimulates
membrane potential - CORRECT ANSWER - Is determined by how many positive or
negative ions are in a cell
The point at which a nerve fiber contacts a muscle cell is called? - CORRECT ANSWER -
Neuromuscular junction
Where is the neurotransmitter acetylcholine released from the neuron to stimulate the muscle
fiber? - CORRECT ANSWER - Neuromuscular junction
Synapse - CORRECT ANSWER - A point of communication between a neuron and
another cell
Synaptic cleft - CORRECT ANSWER - located at every synapse. It is the tiny space a
neurotransmitter must travel
Where is a neurotransmitter kept until it is released? - CORRECT ANSWER - in
vesicles(tiny membranous sacs)
UPDATED Questions and CORRECT
Answers
There are ___ types of muscle tissue. - CORRECT ANSWER -3
smooth, cardiac, and skeletal
Where is Smooth Muscle located - CORRECT ANSWER - makes up the walls of the
hollow body organs and the blood vessel and respiratory passage way
Smooth muscle contracts___ and moves in ____ motions. - CORRECT ANSWER -
involuntarily, wavelike
What can regulate the diameter of an opening such as the central opening of a blood vessel and
produce contractions of hollow organs(like in the uterus)? - CORRECT ANSWER -
Smooth Muscle
Cardiac muscle is_____ and makes up the ____ wall. - CORRECT ANSWER -
involuntary, hearts
Cardiac Muscle is____ and has_____nucleus per cell and branching connections. - CORRECT
ANSWER - Striated, 1
What is the specialized membrane between cardiac muscle cells that allows electrical impulses to
travel rapidly through them creating contractions that are better coordinated? - CORRECT
ANSWER - Intercalated disks because they are "inserted between" the cells.
Which muscle cells appear heavily striated under a microscope? - CORRECT ANSWER -
Skeletal muscle
,____Cells are long and cylindrical. - CORRECT ANSWER - Skeletal Muscle cells
Why are skeletal muscle cells often referred to as fibers? - CORRECT ANSWER -
Because they are long compared to other cells
Skeletal muscle moves______. - CORRECT ANSWER - Voluntarily(It is under conscious
control)
Where is skeletal muscle located? - CORRECT ANSWER - Attached to bones and
produce movement at joints
Attached to other muscles in the abdomen
attached to the skin in the face
3 primary functions of skeletal muscle - CORRECT ANSWER - movement of the skeleton
maintenance of posture
Generation of heat
What is a byproduct of muscle cell metabolism? - CORRECT ANSWER - Heat
How are whole muscles formed? - CORRECT ANSWER - individual muscle fiber (cells)
are arranged in bundles(Fascicles) held together by fibrous connective tissue
Endomysium - CORRECT ANSWER - Deepest layer of connective tissue. Surrounds
individual fibers
Perimysium - CORRECT ANSWER - Connective tissue layer around each fascicle
Epimysium - CORRECT ANSWER - Connective tissue sheath that encases the entire
muscle.
, Forms the innermost layer of the deep fascia which encloses and defines a muscle
motor impulses - CORRECT ANSWER - Nerve impulses coming from the brain/spinal
cord that stimulate skeletal muscle contractions. Stimulate movement
Motor neurons - CORRECT ANSWER - nerve cells that carry motor impulses
Sensory Neurons - CORRECT ANSWER - nerve cells that carry sensory impulses.
Motor unit - CORRECT ANSWER - A single motor neuron and all the muscle fibers it
stimulates
membrane potential - CORRECT ANSWER - Is determined by how many positive or
negative ions are in a cell
The point at which a nerve fiber contacts a muscle cell is called? - CORRECT ANSWER -
Neuromuscular junction
Where is the neurotransmitter acetylcholine released from the neuron to stimulate the muscle
fiber? - CORRECT ANSWER - Neuromuscular junction
Synapse - CORRECT ANSWER - A point of communication between a neuron and
another cell
Synaptic cleft - CORRECT ANSWER - located at every synapse. It is the tiny space a
neurotransmitter must travel
Where is a neurotransmitter kept until it is released? - CORRECT ANSWER - in
vesicles(tiny membranous sacs)
