Flashcards in Unit 2 Deck (116)
Cells group together to form what?
Tissues form what?
How to stem cells reproduce?
What is the function of an adult stem cell?
To repair and replace damaged cells
Where does growth in plants take place?
Where are meristems found in plants?
Tips of growing shoots and roots
Where is an apical meristem found?
Where are lateral meristems found?
Surrounds stem of plant
What does the central nervous system consist of?
The brain and spinal cord
What are some of the main functions of the nervous system?
Send information, co ordinate workings of internal organs, respond to stimuli on the outside
What is the role of the sensory receptors?
To send information about what is happening inside and out to the CNS
What is the role of the cerebrum in the brain?
Enables conscious thought and memory
What is the role of the cerebellum in the brain?
Controls coordination and balance
What is the role of the medulla in the brain?
Controls breathing and heart rate
What is a reflex?
An unconscious action such as pulling away from a hot object
What is your reflex arc?
A simple pathway for the reflex action and is made up of three neurons
What are the three neurons that makes up the reflex arc?
Sensory neuron, reflex neuron and motor neuron
What is the role of the sensory neuron?
It carries information from a receptor to a relay neuron
What is the role of a relay neuron?
It connects a sensory neuron to a motor neuron
What is the job of a motor neuron?
Carries information to an effector (a muscle or gland)
What are the gaps between neurons called?
Has the exocrine system got a faster or slower response compared to the nervous system?
What is controlled by the endocrine system?
In the endocrine system, what releases hormones into the blood stream?
What is the name of cells sensitive to hormones?
What molecule is the only source of energy for brain cells?
What is the definition of multicellular?
An organism made up of many cells
After eating is the level of glucose high or low?
What is excess glucose stored in the form of and where?
Glycogen in the liver