4 structural levels of the body

Question 1

what are cells and what do cells do

Answer 1

cells are the basic structural and functional units of all living organisms.

They are specialised to carry out different functions. for example, red blood cells are able to transport oxygen

Question 2

organs?

Answer 2

They are made up of two or more types of tissues and work together to carry out particular tasks (eg: the heart)

Question 3

systems?

Answer 3

A group of organs working together to carry out a particular task (eg: the digestive or nervous system)

Question 4

what are the 4 types of tissues

Answer 4

• Muscular
• Epithelial
• Connective
• Nervous

Question 5

what are epithelial TISSUES

Answer 5

• cover and line organs
• cells that are made up of epithelium are joined closely together
• eg: Heart and kidney

Question 6

what are connective TISSUES

Answer 6

• Provide support and holds the body together
• cells aren’t close together (they are separated by large amounts of material called matrix)
• eg: bones and kidney

Question 7

What are nervous TISSUES

Answer 7

• made up of nerve cells called neurons
• sends nerve signals to the brain and receives signals from the brain

Question 8

What are the 3 types of muscular tissue

Answer 8

Skeletal, smooth, cardiac

Question 9

what is skeletal muscle (from muscular tissues)

Answer 9

SKELETAL MUSCLE
- the muscle is straited
- voluntary muscle
- It enables humans to move
- it is any muscle you can control

Question 10

what is smooth muscle (from muscular tissues)

Answer 10

SMOOTH MUSCLE
- doesn’t have strations
- involuntary muscle
- helps with digestion and nutrient collection
- found in the intestines and uterus

Question 11

what is cardiac muscle (from muscular tissue)

Answer 11

CARDIAC MUSCLE
- Muscle found in the heart
- When the muscle contracts it pumps the blood.
- involuntary muscle