Save
...
Topic 7: Run for Your Life
7.1 Musculoskeletal System
7.1.4 Energy Supply for Muscle Contraction
Save
Share
Learn
Content
Leaderboard
Share
Learn
Cards (34)
What are the components of the musculoskeletal system?
Bones, muscles, ligaments, tendons
Bones form the body's framework and protect internal
organs
Ligaments connect muscles to bones.
False
Match the muscle type with its function:
Skeletal ↔️ Voluntary movement
Smooth ↔️ Involuntary movement of internal organs
Cardiac ↔️ Heart contraction
What is the functional unit of muscle contraction called?
Sarcomere
Sarcomeres contain actin and
myosin
filaments.
ATP is the primary energy source for muscle
contraction
Order the energy sources for muscle contraction based on their utilization time from shortest to longest:
1️⃣ ATP
2️⃣ Creatine Phosphate
3️⃣ Glycogen
4️⃣ Fat
How long can creatine phosphate provide energy for muscle cells?
10-20 seconds
Creatine phosphate rapidly replenishes
ATP
Glycogen can produce
ATP
without oxygen.
What is a disadvantage of using fat as an energy source for muscle contraction?
Requires oxygen, slow breakdown
Match the muscle type with its characteristic:
Skeletal ↔️ Voluntary movement
Smooth ↔️ Involuntary movement of internal organs
Cardiac ↔️ Heart contraction
What does ATP break down into during hydrolysis?
ADP and a phosphate group
ATP
provides immediate energy for muscle contraction.
During short bursts of activity, ATP provides the necessary
energy
What is the energy source for long-term muscle activity?
Fat
What is the primary energy source for muscle contraction?
ATP
When a muscle contracts, ATP undergoes
hydrolysis
, releasing energy.
Arrange the energy sources for muscle contraction in order of utilization time from shortest to longest.
1️⃣ ATP
2️⃣ Creatine Phosphate
3️⃣ Glycogen
4️⃣ Fat
ATP
provides immediate energy but is limited in availability.
Which energy source rapidly replenishes ATP for short-term bursts?
Creatine Phosphate
Fat produces ATP with oxygen and has a high
yield
but requires a slow breakdown.
Glycogen produces ATP without oxygen but is slower than ATP
hydrolysis
.
What are the components of the musculoskeletal system?
Bones, muscles, ligaments, tendons
Match the muscle type with its primary characteristic:
Skeletal ↔️ Voluntary movement
Smooth ↔️ Involuntary movement
Cardiac ↔️ Heart contraction
What is the functional unit of muscle contraction?
Sarcomere
Cardiac muscle cells are striated and have
intercalated discs
.
There are three types of muscle tissues: skeletal, smooth, and
cardiac
.
What is required for aerobic respiration in muscle cells?
Oxygen
Aerobic respiration produces more ATP than
anaerobic
respiration.
Anaerobic respiration, also known as glycolysis, produces ATP and
lactic
acid in the cytoplasm.
Match the energy source with its utilization time during exercise:
ATP ↔️ Instant
Creatine Phosphate ↔️ Short-term
Glycogen ↔️ Medium-term
What is the end product of anaerobic respiration in muscle cells?
Lactic acid