OUTCOMES 2026 CREDENTIAL EXPERTISE
EVALUATION GUIDE
Explain what is meant by 'homeostasis' and list TWO physiological
variables that must remain within narrow parameters in the body. Ans:
Homeostasis The condition of equilibrium (balance) in the body's
internal environment maintained by the body's own regulatory
processes.
• Core temperature (36.5-37.5°C).
• Water and electrolyte concentrations.
• pH (acidity or alkalinity) of body fluids.
• Blood glucose levels.
• Blood and tissue O 2 / CO 2 levels.
• Blood pressure.
• Flow of Life Force.
◍ List ONE key difference between 'diffusion' and 'facilitated
diffusion'. Ans: Diffusion — the movement of small substances from
a high to low concentration.
Facilitated diffusion — the movement of larger substances from high
to low concentration with the aid of transmembrane proteins
, ◍ Explain what is meant by a 'free radical'. Ans: Free radicals are
unstable and highly reactive molecules. They lack an electron in their
atomic structure, which can be donated by antioxidants.
◍ Explain how 'tight junctions' are formed between cells. Ans:
Transmembrane proteins fuse cells together to reinforce the junctions
and seal off passageways/
◍ Describe the difference between 'supine' and 'prone' body
positions. Ans: Supine describes the body lying face up.
Prone describes the body lying face down
◍ The skeletal system stores minerals such as _______________ and
_______________, whilst functioning to provide a support
framework for the body.
Some bones in the body are known as 'long bones'. These contain a
shaft known as the 'diaphysis', and 2 heads known as the
'__________________'. An example of a long bone is the
____________________.. Ans: The skeletal system stores minerals
such as calcium phosphate and magnesium or potassium, whilst
functioning to provide a support framework for the body. Some bones
in the body are known as 'long bones. These contain a shaft known as
the 'diaphysis', and 2 heads known as the 'epiphyses'
Example: Femur or Tibia
, ◍ Explain why a 'post-menopausal woman' could be susceptible to
the development of osteoporosis. Ans: Oestrogen would normally
suppress osteoclast activity
◍ Explain the key difference between the directional terms 'medial'
and 'lateral'. Ans: Medial: Near to midline
Lateral: Away from the midline
◍ List TWO characteristics of 'slow oxidative' skeletal muscle. Ans:
Any two of the following
Colour: dark red
Respiration: aerobic
Myoglobin and mitochondria: highest
Duration: Longest
Good for: endurance
Diameter: small
◍ Describe the difference between muscle properties 'excitability'
and 'extensibility'. Ans: Excitability → ability to conduct an electrical
current. Nerve impulses cause muscles to contract.
Extensibility → ability to stretch without being damaged.