What is the role of nerves and hormones in the integration of body systems?
They facilitate communication and coordination between different body systems.
What are feedback mechanisms responsible for in body systems regulation?
They help maintain homeostasis by regulating physiological processes.
What is systems integration?
The coordination of cells, tissues, organs, and body systems in a multicellular organism.
What comprises the hierarchy of subsystems in living organisms?
- Cells
- Tissues
- Organs
- Organ systems
- Organism
What is the role of the brain in the body?
It serves as the central information integration organ.
What is the spinal cord’s function as an integrating center?
It processes unconscious actions and reflexes.
How do sensory neurons contribute to the nervous system?
They transmit input to the spinal cord and cerebral hemispheres.
What is the function of motor neurons?
They carry output from the cerebral hemispheres to muscles.
Define nerves.
Bundles of nerve fibers containing both sensory and motor neurons.
What is the cerebellum’s role in the nervous system?
It coordinates skeletal muscle contraction and maintains balance.
How does the hypothalamus control the endocrine system?
It regulates the pituitary gland and maintains homeostasis.
What are the two systems of communication in the body?
- Chemical signals (hormones)
- Electrical signals (nerve impulses)
Fill in the blank: Hormone signalling is a _______ signal.
Chemical
Fill in the blank: Nervous signalling is an _______ signal.
Electrical
What type of responses are associated with hormone signalling?
- Growth
- Development
- Reproduction
- Metabolic rate
- Thermoregulation
- Mood
- Blood solute concentration
What distinguishes the speed and duration of hormone signalling from nervous signalling?
Hormone signalling is slower and long-lasting, while nervous signalling is rapid and short-lived.
What are the main components of the Central Nervous System (CNS)?
- Brain
- Spinal cord
What is the primary function of the Peripheral Nervous System (PNS)?
To relay signals between the CNS and body organs.
What is the main role of the cerebral cortex?
It processes sensory information and relays motor responses.
What are the two main features of the spinal cord?
- Grey matter
- White matter
What is the function of grey matter in the spinal cord?
It contains neuron cell bodies and regulates incoming and outgoing information.
What is the role of white matter in the spinal cord?
It transmits signals to other regions of the brain and spinal cord.
What is a reflex action?
A rapid, unconscious response to a stimulus.
PROCESS: STIMULUS RESPONSE MODEL
pain stimulus is recieved by sensory nerves ending in the skin.
signal sent to interneuron in the grey matter of the spinal cord
response coordinated via motor neurons to skeletal muscles which results in movement away from pain stimulus
-
1.1- Intro to Cells17
-
1.2- Cell Types29
-
1.3- Stem Cells18
-
1.4- Membrane Structure23
-
1.5- Membrane Transport29
-
2.1- Water25
-
2.2- Organic Compounds14
-
2.3- Carbohydrates14
-
2.4- Lipids36
-
2.5- Proteins17
-
3.1- Transcription20
-
3.2- Translation12
-
3.3- Gene Mutations42
-
3.4- DNA Replication11
-
3.5- Cell Division18
-
4.1- Respiratory Systems41
-
4.2- Circulatory system20
-
4.3- Immune System44
-
4.4- Nervous System31
-
4.5- Reproductive System45
-
5.1- Integration48
-
5.2- Regulation26
-
6.1- Plant Structure16
-
6.2- Transpiration17
-
6.3- Germination32
-
7.1- Evolution22
-
7.2- Natural Selection19
-
7.3- Classification30
-
7.4- Extinction35
-
8.1- Population29
-
8.2- Communities21
-
8.3- Habitats25
-
8.4- Ecosystems30
