Chapter 7 Control of movement and balance

Question 1

What are the chracteristics of a stimulus?

Answer 1

Involuntary
Sterotyped
Stimulus
Rapid

Question 2

What is a reflex?

Answer 2

A rapid, automatic response to a change in the external/internal environment.

Question 3

5 main innate responses

Answer 3

1. Knee jerk response
2. Heel reflex
3. Eye reflex
4. Swallowing reflex
5. Cardiac Sphincter reflex

Question 4

Charecteristics of a reflex explained

Answer 4

Involuntary: occurs without conscious thought
Rapid: small # of neurons involved; Spinal chord makes choice from sensory info.
Stereotyped: occurs the same way, every time.
Stimulus: Required for any reflex; never spontaneous.

Question 5

Where does the Cerebellum recieve balance info from?

Answer 5

• Cerebrum: info on body position
• Semicircular canals: inner ear, movements of the head.
• Saccule/utricle: inner ear, position of head.
• eyes: observe body’s posistion in space.

Question 6

Difference between and innate and learned reflex and examples

Answer 6

Innate: born with these, genetic. Ex: Suckling as a babe, chewing, sneezing or coughing when passages are irritated. Learned/acquired: Learned via repetion of activities in life:

Question 7

Difference between and innate and learned reflex and examples

Answer 7

Innate: born with these, genetic. Ex: Suckling as a babe, chewing, sneezing or coughing when passages are irritated. Learned/acquired: Learned via repetition of activities in life: riding a bike, catching a ball