Chapter 3- Organ systems (2) Flashcards
What is the skeletal system made up of?
It is mainly made up of connective tissue and contains mostly bones but also involves the cartilage, joints, and ligaments.
What is the function of the skeletal system?
It protects and supports internal organs and is the framework for muscles and movement.
What do bones store?
Minerals particularly calcium.
How many bones make up the axial skeleton?
80
Where is cartilage found?
Nose, ribs, joints
What are ligaments?
Connects bone to bone
What are tendons?
Connects bone to muscle
There are three types of muscles:
1- Skeletal muscle
2- Cardiac muscle
3- Smooth muscle
What are the main functions of the muscular system?
1- Movement
2- Maintain posture
3- Generate heat
What are some of the characteristics of the muscular system?
1- Contractability
2- Extensibility
3- Elasticity
The skeletal system works in unison with what to allow movement through your environment?
Muscular system
Tendons are what type of tissue?
Dense regular connective tissue
What is the nervous system?
This is the controlling and communicating system of the body
What are the functions of the nervous system?
1- Sensory input- anything that you perceive using your senses
2- Integration- processing of information
3- Motor output- a response
What does the Central nervous system (CNS) consist of?
The brain and spinal cord
What is the Peripheral nervous system (PNS) made up of?
Made up of the nerves and ganglia
What is ganglia?
Collection of neuronal bodies found in the PNS.
What does the peripheral nervous system (PNS) do?
Links the rest of the body to the CNS.
Nerves/neurons can be what types?
Sensory- sends information to the CNS
Motor- sends information from the CNS to the muscles
What is the function of the endocrine system?
It influences metabolic activity through hormone signalling.
What is a hormone?
Chemical messenger secreted in extracellular fluids.
What do endocrine glands secrete and what is it essential for?
Hormones which is essential for cellular growth
What is the timescale of initiation for the endocrine system?
The timescale of initiation is longer, however the effects last longer
