Exam 3 Flashcards
What is the term for turning the soles of the feet inwards
inversion
Which of the following types of joints is slightly movable
amphiarthrotic
The connection between the diaphysis and epiphysis of a young bone can be considered
Synchondrosis
What is the term for a joint that is a cone shape process fastened in a boney socket by ligament
Gomphosis
Which of the following is an example of gomphosis
tooth alveoli
The two pubic bones are held together on the anterior surface by a
Symphasis
The type of joint between the adult frontal and parietal bone is classified as
fibrous
The parietal and temporal bones are joined by
sutures
Standing on ones toes is an example of
plantar flexion
Which of the following types of joint is immovable
synarthrosis
This is the term for the study of movement of the body
Kinesiology
The shoulders is an example of a
ball and socket joint
The movement called an _________will move appendages away from the midline of the body
abduction
Myofibrils are composed mostly of
actin and myosin
Athletes usually experience muscle fatigue less quickly than nonathletes because they
produce less lactic acid.
Which type of connection would be found on your rectus abdominus
aponeuroses
Arrange the following steps for contraction in the correct sequence.
- The muscle impulse reaches the sarcoplasmic reticulum and calcium is released.
- Thin filaments are pulled over the thick filaments.
- Calcium floods the sarcoplasm and binds to troponin molecules leaving active sites.
- The impulse arrives at the synapse and travels through the transverse tubules.
- The muscle fiber shortens and contracts.
- Tropomyosin molecules bind to exposed active sites, linking actin and myosin
4, 1, 3, 6, 2, 5
Which organ converts lactic acid back to glucose
the livers
The muscle cell membrane is termed
sarcolemma
The chemicals that crosses a neuromuscular gap is
neurotransmitter
Which molecule is produced during exercise resulting in oxygen debt
lactate
Which of the following muscle are found in the stomach or blood vessels
smooth
A group of skeletal muscle fibers is called
fascicle
Which of the following would be located in the thigh area
bicep femoris
This type of muscle would have 2 origins
biceps
A single contraction of a muscle is called a
twitch
Since smooth muscle fibers have rhythmically and can stimulate each other they contract in a pattern called
peristalsis
This muscle would be located in the chest region
pectoralis major
This muscle is also known as the calf muscle
gastrocnemius
Which of the following ions is the first to leave neurons during repolarization
K+
The cells that produce myelin in PNS are the
Schwan cells
Which of the following is only under voluntary controls
Mouth
Which of the following cells are not found in the CNS
Schwann cell
The phagocytic cells in the CNS are the
microglia
The resting potential of a a neuron is
-70 mV
The threshold potential of a neuron is
-55 mV
The central nervous system is comprised of the
brain and spinal chord
The most common neurotransmitter in the body is
acetylcholine
The cells that produce myelin in the CNS
oligodendrocytes
Which of the following is not associated with depolarization
Chlorine
At the peak of an action potential the neuron can reach as high
+40 mV
This type of neurotransmitter is a natural opiate
Endorphins
What part of a neuron is directly involved with protein synthesis
Nissi body
Which of the following neurotransmitter is the “feel good’ transmitter?
Dopamine
This type of neurotransmitter is responsible for slurred speech and impaired motor skills is under the influences of drug or alcohol
inhibitory
