natsci topic 7 review

Which system of the human body is involved in the communication function?

locomotor system

Which of the following statements is not correct?

a)     There are cellular receptors inside the eyes and they form images of objects.

b)     The parts that protect the eyes are the pupil, iris, lens and retina.

c)     In the sense of sight, information travels to the brain through nerve impulses.

b

nutrition

The process by which cells obtain energy and nutrients to live

relationship

The ability of cells to receive and respond to stimuli from the environment

reproduction

The process by which cells divide to create new cells

How is the central nervous system structured and what function does it perform?

The central nervous system is made up of the brain and the spinal cord. Its function is to receive information, process it, and coordinate the body’s responses.

Which of the following functions does not belong to the nervous system?

a)     Receiving information from the sensory organs, that is, collecting information

b)     Exploring the body

c)     Giving orders

d)     Eliminating waste products from digestion.

e)     Coordination of organs and systems

Eliminating waste products from digestion

epidermis

The outer layer of the skin that protects the body

excretory pores

Small openings in the skin where sweat leaves the body.

hair

Thin strands growing from the skin that help protect and keep the body warm

sweat glands

Glands in the skin that produce sweat to help cool the body

dermis

The inner layer of the skin that contains blood vessels, nerves, sweat glands, and hair roots

digestive system

Breaks down food and absorbs nutrients

circulatory system

Transports nutrients and oxygen to the cells, and transports waste substances

respiratory system

Takes in oxygen and removes carbon dioxide

excretory system

Removes waste products resulting from the burning of nutrients in the cells and waste products transported by the blood

receptor cells

Those capable of receiving external stimuli

motor nerves

Muscles receive orders from the brain or spinal cord

The following are involved in internal coordination:

a)     the nervous system, involuntary muscles and the endocrine system.

b)     the circulatory system, digestive system and nervous system.

c)     the locomotor system, brain and sensory organs. 

a

the axon

The part of the neuron responsible for transmitting information from one neuron to another neuron or to an organ in the body

The musculoskeletal system is made up of

Skeleton and muscular system