MC Anatomy Exam 1 Flashcards
Which type of joint is very movable
a. synovial
b. fibrous
c. cartilaginous
d. gomarthrosis
synovial
a sprain is an injury to which skeletal structure
a. ligament
b. meniscus
c. bone
d. bursa
ligament
which of the following is a fluid-filled sac near a joint that is a designed to prevent friction
a. tendon
b. synovium
c. bursa
d. menisci
bursa
the motion that occurs when someone brings the arm up directly in front of the body by moving the shoulder joint is
a. flexion
b. abduction
c. extension
d. adduction
flexion
in the standing position, if the person bends the knee-this is referred to as
a. flexion
b. abduction
c. extension
d. adduction
flexion
which of the following joints contain a menisci
a. knee
b. shoulder
c. ankle
d. spine
knee
the tooth in the jawbone is an example of what type of joint
a. synovial
b. fibrous
c. cartilaginous
d. capsular
fibrous
the joint between the vertebral bodies is what type of joint
a. synovial
b. fibrous
c. dense
d. cartilaginous
cartilaginous
the joints formed by sutures of the skull are examples of which types of joint
a. diaphyses
b. cartilaginous
c. synovial
d. fibrous
fibrous
the shoulder and knee joints have which of the following in common
a. they both allow a wide range of motions including flexion, extension, abduction, adduction and rotation
b. in terms of their joints congruency, they are both very tight
c. they are both supported by ligaments, which join the bones to each other
d. they are both ball-and-socket type joints
they are both supported by ligaments, which join the bones to each other
which of the following is an example of an isometric contraction
a. a person lifting books from the floor
b. doing a sit-up
c. maintaining an upright position
d. moving a chair across the room
maintaining an upright position
which of the following has the greatest effect on the amount of muscle tension that results from a muscle contraction?
a. the number of the motor units in the muscle stimulated
b. the type of bone to which the muscle is attached
c. the frequency of calcium discharge
d. the rate of ATP production
the number of the motor units in the muscle stimulated
intercalated discs
a. are characteristic of smooth muscel cells
b. contain gap junctions that allow the signal to contract to spread quickly through cardiac muscle cells
c. stimulate pacemaker cells in cardiac muscle
d. stimulate the contraction of skeletal muscle
contain gap junctions that allow the signal to contract to spread quickly through cardiac muscle cells
which of the following is characteristic of muscle relaxation
a. there is an increase in the secretion of a neurotransmitter at the neuromuscular junction
b. acetylcholinesterase is produced
c. myosin-actin cross-bridges are formed
d. sarcomeres shorted
acetylocholinesterase is produced
fast twitch muscle fibers have which characteristic
a. fatigue resistance
b. few mitochondria
c. designed for endurance
d. store oxygen
few mitochondria
muscle hypertrophy is primarily due to
a. loss of muscle tone
b. increased glycogen
c. increased muscle proteins and water
d. increased numbers of muscle cells
increased muscle proteins and water
a contraction that lengthens the muscle during the contraction is
a. concentric
b. eccentric
c. isometric
d. kinetic
eccentric
the agonist muscle that produces the action of elbow extension is produced by which muscle
a. brachialis
b. supraspinatus
c. trapezius
d. triceps
triceps
a muscle that assists the action of a prime mover is
a. concentric
b. a synergist
c. an antagonist
d. agonist
a synergist
muscle tone refers to
a. the muscle contraction that muscles have even if they are not working
b. the nerve and the muscle fibers it supplies
c. the sound a muscle makes during contraction
d. the energy required for a muscle to contract
the muscle contraction that muscle have even if they are working
the specific role of calcium in skeletal muscle contraction is to
a. release the neurotransmitter
b. expose the binding site so that actin can form a cross bridge with myosin
c. begin the calcium potassium pump
d. act as fuel for ATP to be generated
expose the binding site so that actin can form a cross bridge with myosin
with endurance training, which physiological change would most likely occur in the trained muscles
a. increased numbers of mitochondria
b. enlargement of the muscle
c. shrinking of the muscle size
d. increased actin content
increased number of mitochondria
the quickest source of ATP that only last for a few seconds and is the result of recycling ADP into ATP is
a. creatine phosphate
b. aerobic metabolism of stored glycogen
c. anaerobic metabolism
d. fast twitch
creatine phosphate
the purpose of synaptic vesicles in muscle is to
a. absorb calcium
b. store calcium
c. release neurotransmitter
d. build muscle protein
release neurotransmitter
thick filaments are composed mainly of the actin protein
a. true
b. false
false
the area of calcium storage for muscle cells is what
a. osteocytes
b. ribosomal
c. T tubules
d. sarcoplasmic reticulum
sarcoplasmic reticulum
the neurotransmitter associated with skeletal muscle is called
a. ATP
b. calcium
c. Acetylcholine
d. nucleic acid
acetylcholine
