Anatomy
What is contractility
1 the ability to be stronger
2 the ability to get shorter
Select the correct answer
Number 2
During exercise, what is the primary function of blood?
Transport (wether it is of nutrients, waste, hromones or heat)
Distinguish between internal and external respiration
External respiration is the Exchange of O2 and CO2 between the lungs and the blood
Internal respiration is the exchange of O2 and CO2 between the lungs and the blood
What is the main difference between micronutrients and macronutrients
Macronutrients are required in higher amounts
In which sport is the Fosbury Flop used?
High jump
Which muscle is proximal to the gluteus maximus
Can be: cuadriceps, sartorius, aductor, oblique
What are arteries responsible for?
Transport the blood away from the heart and into the tissues
Name the function of the alveoli and where are they located
allows rapid diffusion of oxygen and carbon dioxide and they are located in the lungs
Explain two different cases where homeostasis is being used
Homeostasis used to decrease the amount of glucose in blood due to high energy levels, or used to increase the amount of glucose due to lack of energy
What kind of lever is the neck in relation to the head?
First class
What is the origin of the biceps brachii
The scapula
The heart contracts to pump blood throughout the body, the sequential contractions are started from a specialist group of cells, what is the name for them?
Sinoatrial node
Name 2 functions of trachea
keep trachea open at all times, Trachea is lined by mucous protection against dust
Which type of energy system would you use for running a marathon? Why?
Aerobic system, lasts up to two hours and provides 36-38 ATPs
Define the term center of mass.
The mathematical point around which the mass of a body or object is evenly distributed.
Describe a large bone
cylindrical and long and provides strength and structure
Complete the gaps:
The SA node sends an impulse through the walls of the -----, to a second group of specialist cells called -----.This rapid conduction of the impulse causes the muscles to contract simultaneously, increasing the ---- in the Atria and forcing blood from the atria through the AV valves into theventricles
Atria, Atrioventricular node, pressure
Name the respiratory tract in order
Nose, mouth, pharynx, larynx, trachea, bronchi, bronchioles and alveoli
State the cultural aspects that define a balanced diet in a country
Availabilty of resources/ religion /prices
How do the dimples on a golf ball help the Bernoulli effect?
The dimples on the ball allow the ball to move faster since there is more interaction between the ball and the air as it catches on each dimple.
Mention 4 Features of synovial joints
Can be: Articular Capsule, Articular Cartilage, Synovial Membrane, Synovial Fluids, Bursae, Meniscus.
What is the difference between Systole and diastole?
Diastole and systole are two phases of the cardiac cycle. They occur as the heart beats, pumping blood through a system of blood vessels that carry blood to every part of the body. Systole occurs when the heart contracts to pump blood out, and diastole occurs when the heart relaxes after contraction.
Explain the mechanics of expiration
The intercostal muscles relax and so the rib cage turns to its original size, the diaphragm relaxes pushing it up . The chest cavity gets smaller and so pressure in the lungs increases. Air flows out of the lungs
Name all the hormones released when starting exercise, and its effects on the glucose blood level
Glucagon → increases blood levels on the bloodstream
Insulin → Abosrbes glucose on skeletal muscles
Adrenaline → Activates muscle contraction
Define the relation between angular momentum, moment of inertia and angular velocity?
angular momentum= angular velocity x moment of inertia