BIO201 EXAM 3: BIO 201, 2025/2026
WITH CORRECT/ACCURATE ANSWERS
What composes the muscular system? - CORRECT ANSWERS-
Skeletal muscles only
What is a myogram? - CORRECT ANSWERS- Chart timing and
strength of the muscle's contraction.
What is the study of the muscular system called? - CORRECT
ANSWERS- Myology
What is muscle tone? - CORRECT ANSWERS- Central nervous
system continually monitors and adjusts length of the resting
muscles, maintaing a state of partial contraction.
What are the 4 functions of muscles? - CORRECT ANSWERS- 1.
Movement
2. Stability
3. Control of body openings and passages
4. Heat production
,What does muscle tone maintain? - CORRECT ANSWERS-
Maintains optimum length and makes the muscles ideally ready
for action.
What does a weak sub threshold electrical stimulus give? -
CORRECT ANSWERS- No contraction.
What is a threshold? - CORRECT ANSWERS- Minimum voltage
necessary to generate an action potential in the muscle fiber and
produce a contraction.
What is the latent period? - CORRECT ANSWERS- Delay between
onset of the stimulus and onset of twitch.
What is internal tension? - CORRECT ANSWERS- Force generated
during the latent period.
What is the contraction phase? - CORRECT ANSWERS- Phase in
which filaments slide and the muscle shortens.
What produces external tension? - CORRECT ANSWERS- Once
elastic components are taut.
What 6 factors do twitches strength affect them? - CORRECT
ANSWERS- 1. Stimulus frequency
2. Concentration of Ca 2+
, 3. How stretched muscle was before stimulus
4. Temperature
5. pH
6. State of hydration
What is isometric contraction? - CORRECT ANSWERS- Muscle
produces internal tension while an external resistance causes it to
stay the same length or become longer.
What is isotonic contraction? - CORRECT ANSWERS- Muscle
changes in length but the tension stays the same.
What is concentric muscle contractions? - CORRECT ANSWERS-
Muscle shortens while tension stays the same.
What is eccentric muscle contractions? - CORRECT ANSWERS-
Muscle lengthens as it maintains tension.
All muscle contraction depends on what? - CORRECT ANSWERS-
ATP.
ATP depends on the availability of what two things? - CORRECT
ANSWERS- 1. Oxygen
2. Glucose and fatty acids
WITH CORRECT/ACCURATE ANSWERS
What composes the muscular system? - CORRECT ANSWERS-
Skeletal muscles only
What is a myogram? - CORRECT ANSWERS- Chart timing and
strength of the muscle's contraction.
What is the study of the muscular system called? - CORRECT
ANSWERS- Myology
What is muscle tone? - CORRECT ANSWERS- Central nervous
system continually monitors and adjusts length of the resting
muscles, maintaing a state of partial contraction.
What are the 4 functions of muscles? - CORRECT ANSWERS- 1.
Movement
2. Stability
3. Control of body openings and passages
4. Heat production
,What does muscle tone maintain? - CORRECT ANSWERS-
Maintains optimum length and makes the muscles ideally ready
for action.
What does a weak sub threshold electrical stimulus give? -
CORRECT ANSWERS- No contraction.
What is a threshold? - CORRECT ANSWERS- Minimum voltage
necessary to generate an action potential in the muscle fiber and
produce a contraction.
What is the latent period? - CORRECT ANSWERS- Delay between
onset of the stimulus and onset of twitch.
What is internal tension? - CORRECT ANSWERS- Force generated
during the latent period.
What is the contraction phase? - CORRECT ANSWERS- Phase in
which filaments slide and the muscle shortens.
What produces external tension? - CORRECT ANSWERS- Once
elastic components are taut.
What 6 factors do twitches strength affect them? - CORRECT
ANSWERS- 1. Stimulus frequency
2. Concentration of Ca 2+
, 3. How stretched muscle was before stimulus
4. Temperature
5. pH
6. State of hydration
What is isometric contraction? - CORRECT ANSWERS- Muscle
produces internal tension while an external resistance causes it to
stay the same length or become longer.
What is isotonic contraction? - CORRECT ANSWERS- Muscle
changes in length but the tension stays the same.
What is concentric muscle contractions? - CORRECT ANSWERS-
Muscle shortens while tension stays the same.
What is eccentric muscle contractions? - CORRECT ANSWERS-
Muscle lengthens as it maintains tension.
All muscle contraction depends on what? - CORRECT ANSWERS-
ATP.
ATP depends on the availability of what two things? - CORRECT
ANSWERS- 1. Oxygen
2. Glucose and fatty acids
