Coordinated control of heart rate

The heart controls its own resting heart rate. True or false?

• True

• False

The region of the heart that controls its resting heart rate is the...?

• SNA

• SVN

• AVN

• SAN

Which key term is used to describe the fact that the action potentials that control resting heart rate originate at the SAN in the heart muscle?

• sarcogenic

• myogenesis

• myogenic

• sarcogenesis

Changes in heart rate are __________ and controlled by the _____________ nervous system

• voluntary, autonomic

• voluntary, somatic

• involuntary, autonomic

• involuntary, somatic

Which part of the brain is responsible for controlling changes in heart rate due to exercise/stress etc?

• cerebellum

• medulla oblongata

• pituitary gland

• cerebrum

There are two centres in the medulla oblongata. Which two branches of the nervous system do they belong to?

• sympathetic and parasympathetic

• somatic and autonomic

• sympathetic and autonomic

• parasympathetic and autonomic

Which type of neurone connects the coordination centres in the medulla oblongata with the SAN?

• sensory

• relay

• motor

The sympathetic coordination centre __________ heart rate by sending impulses along the ____________ nerve

• increases, vagus

• increases, accelerator

• decreases, vagus

• decreases, accelerator

The parasympathetic coordination centre __________ heart rate by sending impulses along the ____________ nerve

• increases, vagus

• increases, accelerator

• decreases, vagus

• decreases, accelerator

Which type of receptor detects pressure changes?

• chemoreceptors

• thermoreceptors

• baroreceptors

• photoreceptors