Human Biology Year 12 questions with
correct answers rated 100%.
Homeostasis ANS - Maintenance of a relatively constant internal environment
Tolerance limits ANS - Upper and lower limits of the body that will not affect body function
Types of receptors ANS - Thermoreceptors, osmoreceptors, chemoreceptors, mechanoreceptors and
nocioceptors
Thermoreceptor ANS - Sensitive to temperature to maintain core body temp
Osmoreceptor ANS - Sensitive to small changes in bodily fluids (osmotic pressure)
Chemoreceptor ANS - Stimulated by certain chemicals
Mechanoreceptor ANS - AKA touch receptor that is sensitive to touch, pressure and vibration
Nocioceptor ANS - AKA pain receptor that is stimulated by damage to the tissues
Diagram representing feedback loop ANS - Stimulus response feedback loop
Stimulus response feedback loop description ANS - 1. stimulus; change in environment
2. receptor; detects stimulus
3. modulator; processes the msg
4. effector; muscle/gland that carries out response
5. response; action that responds to original stimulus
6. feedback; change to original stimulus
, Negative feedback ANS - Counteracts original stimulus
Positive feedback ANS - Enhances original stimulus
Examples of negative feedback ANS - Body temp, water concentration, glucose concentration, oxygen
concentration, heart rate, blood pressure etc.
Examples of positive feedback ANS - Secretion of oxytocin during labour and blood clotting
Homeostasis regulates these ANS - Core body temp, blood pressure, glucose concentration, O2 and
CO2 concentration, metabolic waste concentration, pH/concentration of substances in body fluids
Nervous system is made up of ANS - Brain, spinal cord and nerves
Central nervous system is made up of ANS - Brain and spinal cord
Peripheral nervous system is made up of ANS - Nerves (cranial and spinal nerves)
Nervous system function ANS - Communication in the centre of the body
Functional types of neurons ANS - Sensory, motor and inter neurons
Structural types of neurons ANS - Unipolar, bipolar and multipolar
Sensory neuron ANS - Carries impulse from receptor towards the CNS
Motor neuron ANS - Carries impulse from CNS to effector
Inter neuron ANS - Carries impulse between sensory and motor neurons
correct answers rated 100%.
Homeostasis ANS - Maintenance of a relatively constant internal environment
Tolerance limits ANS - Upper and lower limits of the body that will not affect body function
Types of receptors ANS - Thermoreceptors, osmoreceptors, chemoreceptors, mechanoreceptors and
nocioceptors
Thermoreceptor ANS - Sensitive to temperature to maintain core body temp
Osmoreceptor ANS - Sensitive to small changes in bodily fluids (osmotic pressure)
Chemoreceptor ANS - Stimulated by certain chemicals
Mechanoreceptor ANS - AKA touch receptor that is sensitive to touch, pressure and vibration
Nocioceptor ANS - AKA pain receptor that is stimulated by damage to the tissues
Diagram representing feedback loop ANS - Stimulus response feedback loop
Stimulus response feedback loop description ANS - 1. stimulus; change in environment
2. receptor; detects stimulus
3. modulator; processes the msg
4. effector; muscle/gland that carries out response
5. response; action that responds to original stimulus
6. feedback; change to original stimulus
, Negative feedback ANS - Counteracts original stimulus
Positive feedback ANS - Enhances original stimulus
Examples of negative feedback ANS - Body temp, water concentration, glucose concentration, oxygen
concentration, heart rate, blood pressure etc.
Examples of positive feedback ANS - Secretion of oxytocin during labour and blood clotting
Homeostasis regulates these ANS - Core body temp, blood pressure, glucose concentration, O2 and
CO2 concentration, metabolic waste concentration, pH/concentration of substances in body fluids
Nervous system is made up of ANS - Brain, spinal cord and nerves
Central nervous system is made up of ANS - Brain and spinal cord
Peripheral nervous system is made up of ANS - Nerves (cranial and spinal nerves)
Nervous system function ANS - Communication in the centre of the body
Functional types of neurons ANS - Sensory, motor and inter neurons
Structural types of neurons ANS - Unipolar, bipolar and multipolar
Sensory neuron ANS - Carries impulse from receptor towards the CNS
Motor neuron ANS - Carries impulse from CNS to effector
Inter neuron ANS - Carries impulse between sensory and motor neurons
