1.4.1 Immediate effects during exercise

• What happens to stroke volume during exercise?

  More blood is pumped per beat
• During exercise, breathing rate increases to take in more oxygen
• During exercise, blood flow to muscles increases to deliver more oxygen and nutrients
• Match the factor with its effect on heart rate or blood pressure:

  Adrenaline ↔️ Increases heart rate and raises systolic pressure

  Nervous System ↔️ Speeds up heart contractions and constricts blood vessels

  Muscle Activity ↔️ Demands more oxygen and expands arterial beds
• Arrange the factors affecting heart rate and blood pressure during exercise in order of their primary effect:

  1️⃣ Adrenaline increases heart rate

  2️⃣ Nervous system speeds up contractions

  3️⃣ Muscle activity demands more oxygen
• During exercise, the breathing rate increases to take in more oxygen
• Increased blood flow and contraction efficiency help muscles produce energy during exercise.


  True
• What happens to muscle temperature during exercise?

  It elevates
• During exercise, the body experiences an increase in heart rate and blood pressure to meet the higher demands for energy and oxygen
• Adrenaline raises systolic blood pressure during exercise.

  True
• How does muscle activity affect blood vessels during exercise?

  Expands arterial beds
• Increased breathing rate during exercise helps take in more oxygen and expel more carbon dioxide.


  True
• What is the term for the amount of air inhaled or exhaled per breath?

  Tidal volume
• What happens to blood flow to muscles during exercise?

  Increases
• During exercise, the body maintains safe core temperature through thermoregulation mechanisms like sweating and vasodilation
• Blood flow to the skin increases during exercise to facilitate heat dissipation.


  True
• What are the immediate effects of exercise on the body?

  Physiological changes
• What effect does adrenaline have on systolic blood pressure during exercise?

  Raises systolic pressure
• What does muscle activity demand more of during exercise?

  Oxygen
• During exercise, the body experiences an increase in heart rate and blood pressure
• Order the physiological changes during exercise that contribute to increased oxygen delivery:

  1️⃣ Adrenaline release and nervous system activation

  2️⃣ Heart rate increases

  3️⃣ Blood vessels dilate

  4️⃣ Blood pressure rises

  5️⃣ Working muscles receive more oxygen
• Increased tidal volume during exercise refers to taking deeper breaths
• Match the respiratory change with its effect and reason during exercise:

  Increased breathing rate ↔️ Faster breaths to take in oxygen and expel carbon dioxide

  Increased tidal volume ↔️ Deeper breaths to increase air inhaled and exhaled
• During exercise, blood flow to muscles is increased to deliver more oxygen and nutrients
• Why does body temperature increase during exercise?

  Heat generated by muscles
• The immediate effects of exercise are the physiological changes that occur in the body during physical activity
• Systolic blood pressure increases during exercise


  True
• What happens to tidal volume during exercise?

  Each breath is deeper
• Muscle temperature increases during exercise


  True
• Which hormone is released during exercise for energy mobilization?

  Adrenaline
• Heart rate and blood pressure increase during exercise to meet higher energy demands

  True
• During exercise, increased muscle activity expands arterial beds for more blood flow
• The release of adrenaline during exercise directly increases blood pressure.

  False
• What is tidal volume measured in?

  Air inhaled or exhaled per breath
• During exercise, the breathing rate increases to ensure more oxygen is taken into the lungs
• The nervous system speeds up heart contractions during exercise.


  True
• What effect does adrenaline have on heart rate during exercise?

  Increases heart rate
• The nervous system speeds up heart contractions during exercise, which increases the heart rate
• Steps of physiological changes during exercise

  1️⃣ Release of adrenaline

  2️⃣ Activation of the nervous system

  3️⃣ Increased muscle activity

  4️⃣ Blood vessel dilation

  5️⃣ Rise in blood pressure
• During exercise, muscle temperature becomes elevated