A.1.1.1 Inter-system comunication (part 3)

What is the first step in the sensory stimulus leading to a motor response?

• Sensory stimulus received

• CNS sends a message

• Motor response occurs

• Information travels along motor nerves

Which part of the nervous system is responsible for sending messages to skeletal muscles?

• Peripheral nervous system

• Motor nerves

• CNS

• Sensory nerves

What role does the hypothalamus play in temperature control?

• Stimulates muscle contraction

• Maintains body temperature

• Controls breathing rate

• Regulates heart rate

What is the function of vasodilation?

• Decreasing body temperature

• Increasing heart rate

• Widening of blood vessels

• Narrowing of blood vessels

What is the sequence of excitation in the heart initiated by?

• Bundle of His

• Atrioventricular node

• Sinoatrial node

• Purkinje fibres

Which nerve slows the heart rate?

• Vagus nerve

• Sympathetic nerve

• Phrenic nerve

• Accelerator nerve

What is the anticipatory rise in heart rate associated with?

• Lower pH levels

• Decreased blood pressure

• Adrenaline production

• Increased oxygen levels

Which receptors relay information about blood pressure?

• Muscle proprioceptors

• Photoreceptors

• Baroreceptors

• Thermoreceptors

What do sweat glands help regulate?

• Blood pressure

• Body temperature

• Breathing rate

• Heart rate

What is myogenic contraction?

• Contraction influenced by hormones

• Contraction requiring nerve impulse

• Contraction on its own

• Contraction initiated by the brain