Conscious and unconscious responses (2B) Flashcards
What is a conscious response?
A deliberate and voluntary action that is initiated by the brain and performed intentionally by the body.
What is the first step of a conscious response to stimuli?
The sensory stimuli comes into contact with sensory receptors that detect these sensations.
What is the second step of a conscious response to stimuli?
Hint - it occurs after the sensory receptors detect a stimuli.
The sensory neural message is transmitted through afferent pathways to the brain.
What is the third step of a conscious response to stimuli?
Hint - it occurs after the sensory message is transmitted to the brain.
The brain processes this sensory information, coordinating and initiating a motor response.
What is the fourth step of a conscious response to stimuli?
Hint - it occurs after the brain processes sensory information.
The motor neural message is transmitted through efferent pathways to the skeletal muscles.
What is the fifth step of a conscious response to stimuli?
Hint - it occurs after a motor message is sent to skeletal muscles.
The skeletal muscles carry out the conscious motor response to the sensory stimulus.
What is an unconscious response?
An automatic and involuntary action that is performed by the body independently of the brain.
What are three examples of sympathetic responses?
Answers could include -
heart rate increase
breathing rate increase
pupils dilate
adrenal glands secrete stress hormones
sweat glands activated
inhibited digestion
bladder relaxes
body releases more glucose
What are three examples of parasympathetic responses?
Answers could include -
heart beat steadies
lung airways constrict
pupils constrict
adrenal glands do not produce stress hormones
sweat glands regulate
normal digestion process
bladder constricts
body releases less glucose
What is the spinal reflex?
An unconscious response to sensory stimuli that is initiated by interneurons in the spinal cord, independently of the brain.
It is an immediate reaction to a painful sensory stimuli.
Is this scenario conscious or unconscious?
A person touches their hand on an extremely hot pan and immediately jumps.
Unconscious