Biology Exercise 19: Somatic Reflexes

Question 1

5 components of a reflex arc

Answer 1

1. sensory receptor
2. sensory neuron
3. integration center
4. motor neuron
5. effector

Question 2

how many neurons are in a monosynaptic reflex arc?

Answer 2

2

Question 3

how many synapses are in the integrating centre?

Answer 3

1

Question 4

how many neurons are in a polysynaptic reflex arc?

Answer 4

3 or more

Question 5

how many synapses are in a polysynaptic reflex arc containing two interneurons in the integrating centre?

Answer 5

3

Question 6

which type of neuron does the sensory neuron synapse with in a monosynaptic reflex arc?

Answer 6

motor

Question 7

which type of neuron does the sensory neuron synapse with in a polysynaptic reflex arc?

Answer 7

interneuron

Question 8

Achilles reflex

Answer 8

tibial

Question 9

Biceps reflex

Answer 9

musculocutaneous

Question 10

Patellar reflex

Answer 10

femoral

Question 11

Plantar flexion reflex

Answer 11

tibial

Question 12

Triceps reflex

Answer 12

reflex

Question 13

Is a babinski’s sign normal in adults?

Answer 13

no

Question 14

nerve carrying motor information causing right leg flexion

Answer 14

sciatic

Question 15

nerve carrying motor information causing left leg extension

Answer 15

femoral

Question 16

agonistic muscle for right leg flexion

Answer 16

right hamstrings

Question 17

agonistic muscle for left leg extension

Answer 17

left quadriceps