Unit 1 - Applied Anatomy and Physiology Flashcards
What are the Functions of the Skeletal System?
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- Blood Cell Production
- Mineral Storage
- Protection
- Shape
- Support
- Movement
Describe Blood Cell Production.
as a function of the skeletal system
The inner marrow of long bones produces red and white blood cells.
What do Red Blood Cells do?
Red blood cells carry oxygen to the working muscles.
What do White Blood Cells do?
White blood cells help fight of infections in various ways.
How do muscles help move bones?
Muscles always pull bones.
Describe Movement.
as a function of the skeletal system
Provides anchors or points for muscles to pull against.
What is a ligament?
A tissue which attaches bone to bone.
What is a tendon?
A tissue which attaches bone to muscle.
Describe Protection.
as a function of the skeletal system
Certain bones protect our vital organs from external forces.
Which kind of bones protect?
Flat Bones.
Describe Support.
as a function of the skeletal system
Our bones provide support for our muscles and organs. Without this we would be a mass of soft tissue.
Describe Shape.
as a function of the skeletal system
Provides us with our general shape such as height and build.
Describe Mineral Storage.
as a function of the skeletal system
Our bones store minerals which can be released into the blood stream.
Which Minerals are stored in bones?
Phosphorus
Calcium
What does Phosphorus do?
Phosphorus helps maintain healthy joints.
What does Calcium do?
Calcium helps maintain strong bones.
What is Function?
What something does.
What is Structure?
Why something is designed a certain way.
5 Elements of the Structure of a Skeleton?
- Movement at a joint
- Shape and type determine amount of movement
- Flat bones for the protection of vital organs
- Different types of joints allow different types of movement
- Provide a point of attachment for muscles
What are the 14 bones you need to know?
use a figure to help
Cranium - Head Vertebrae - Back Scapula - Shoulder blade Humorous - Top of arm Ribs - Torso Sternum - Chest bone Radius - Lower arm (thumb side) Ulna - Lower arm (pinkie side) Pelvis - Hip Femur - Upper leg Tibia - Front (large) shin bone Fibula - Back (small) shin bone Patella - Knee Cap Talus - Ankle (Figure 1)
What is the bone in the Head?
Cranium (Figure 1)
What is the bone in the Back?
Vertebrae (Figure 1)
What is the bone in the Shoulder blade?
Scapula (Figure 1)
What is the bone in the Top of arm?
Humorous (Figure 1)
What is the bone in the Torso?
Ribs (Figure 1)
What is the bone in the Chest?
Sternum (Figure 1)
What is the bone in the Lower arm (thumb side)?
Radius (Figure 1)
What is the bone in the Lower arm (pinkie side)?
Ulna (Figure 1)
What is the bone in the Upper leg?
Femur (Figure 1)
What is the bone in the Hip?
Pelvis (Figure 1)
What is the bone in the Ankle?
Talus (Figure 1)
What is the bone in the Knee Cap?
Patella (Figure 1)
What is the bone in the Back (small) shin bone?
Fibula (Figure 1)
What is the bone in the Front (large) shin bone?
Tibia (Figure 1)
What are the 13 muscles you need to know?
use a figure to help
Deltoid - Upper arm Rotator Cuff - Near the armpit Pectorals - Chest Abdominals - Stomach Biceps - Upper (front) arm Tricep - Upper (back) arm Latissimus Dorsi - Side Hip Flexors - Pelvic area Gluteals - Butt Hamstring - Upper (back) leg Quadriceps - Upper (front) leg Gastrocnemius - Calf Tibialis Anterior - Shin
What is the muscle in the Shin?
Tibialis Anterior
What is the muscle in the Calf?
Gastrocnemius
What is the muscle in the Upper (front) leg?
Quadriceps
What is the muscle in the Upper (back) leg?
Hamstring
What is the muscle in the Butt?
Gluteals
Gluteus Maximus
What is the muscle in the Pelvic area?
Hip Flexors
What is the muscle in the Side?
Latissimus Dorsi
What is the muscle in the Upper arm?
Deltoid
What is the muscle near the armpit?
Rotator Cuff
What is the muscle in the Chest?
Pectorals
What is the muscle in the Stomach?
Abdominals
What is the muscle in the Upper (front) arm?
Biceps
What is the muscle in the Upper (back) arm?
Tricep
Describe Flexion
Bending of the limbs at a joint/ reducing the joint angle.
Describe Extension
Straightening of the limb at a joint/ increasing the joint angle.
Describe Abduction
Movement away from the midline of the body.
Describe Adduction
Movement towards the midline of the body.
Describe Rotation
A circular motion around a fixed point.
Describe Plantar Flexion
The movement of the foot, in which the foot flexes downwards towards the sole.
(down towards plants)
ONLY AT THE ANKLE
Describe Dorsiflexion
The upwards or backwards flexion of the foot.
ONLY AT THE ANKLE
What is a joint?
Where two (or more) bones meet. (Movement can only occur here)
What is a Hinge joint?
Joint that allows flexion and extension.
Name 3 Hinge joints.
Elbow
Knee
Ankle
What is a Ball and Socket joint?
Joint that allows many types of movement.
Name 2 Ball and Socket joints.
Shoulder
Hip
What is a Synovial Joint?
Synovial joints (or freely movable joints) are the most common types of joint and are usually found in the limbs. They are characterised by a fluid filled space between cartilage pads at the end of bones.
What is a Synovial Membrane?
Secrete synovial fluid.
What is a Synovial Fluid?
Lubricates the joint and is in the joint cavity.
What is the function of Synovial fluid?
Prevents friction between two (or more) bones.
What is a Joint Capsule?
Tough fibrous tissue that surrounds the joint and is supported by ligaments.
What is Cartilage?
Covers the end of the bones, providing a smooth, friction free surface. Cartilage acts as a shock absorber.
What is a Bursa Sack?
A sack of fluid that sits between your muscles/tendons and your bone to prevent friction.
Draw a diagram of a synovial joint.
(See Figure 3) Should contain: Synovial FLuid Synocial Membrane Joint cap Ligament Bursa sac Cartilage
Define Antagonistic Pairs
Muscles work in pairs. As one shortens, the other lengthens.
What are the 2 types of contractions?
Isotonic
Isometric
What is an isotonic contraction?
A Contraction when the muscles/limbs are moving, this means one muscle is lengthening and one is shortening.
What is a concentric contraction?
The muscles shorten.
What is an eccentric contraction?
The muscles lengthen.
What is an isometric contraction?
A Contraction where the muscles/limbs are not moving.
What happens in the nasal cavity?
Air is warmed, filtered and moistened.
Describe the pathway of air.
Air…
Enters through the nasal cavity (or mouth)
Passes through the trachea
Beaches into one of the two bronchi
Passes through one of many bronchioles
Enters one of the 600 million alveoli where gas exchange occurs
What happens in the alveoli during inhalation?
There is a high concentration of oxygen in the alveoli, there is a low concentration of oxygen in the capillaries and thus oxygen diffuses into the blood.
What happens in the alveoli during exhalation?
There is a low concentration of carbon dioxide in the alveoli, there is a high concentration of carbon dioxide in the capillaries and thus oxygen diffuses out of the blood.
How does blood carry oxygen.
Oxygen connects to haemoglobin in the red blood cells forming oxyhemoglobin.
How are alveoli specialised to be good at their jobs?
5
- Large Surface area
- Thin Membrane (1 Cell thick)
- Short Diffusion Pathway
- Layer of Moisture
- Rich Blood Supply
What happens to your lungs when you inhale?
The lung cavity increases so that air rushes in due to pressure difference.
How does your lung cavity increase at rest?
Inhalation
Intercostal muscles contract, this expands the ribcage.
Diaphragm contracts, pulling downwards to expand the chest volume.
How does your lung cavity decrease at rest?
Exhalation
Intercostal muscles relax, this causes the ribcage to drop inwards and downwards.
Diaphragm relaxes, moving upwards, decreasing the chest volume.
What helps your lung cavity increase during sport?
Inhalation
Pectorals assist the intercostal muscles
Sternocleidomastoid pulls the sternum down to increase chest cavity.
What helps your lung cavity decrease during sport?
Exhalation
Abdominals pull down the ribcage with speed to get the largest quantity of carbon dioxide out.
Why is it important to breath harder when exercising?
Because you need more oxygen getting to your muscles which are working harder and you need less carbon dioxide in your lungs (taking up air pressure).
Define Tidal Volume
The volume of air breathed in or out during normal breathing and at rest.
Define Expiratory Reserve Volume
The additional air that can be forcibly exhaled after the exhalation of a normal tidal volume.
What does ERV stand for?
Expiratory Reserve Volume
What does IRV stand for?
Inspiratory Reserve Volume
Define Inspiratory Reserve Volume
The additional air that can be forcibly inhaled after the inspiration of a normal tidal volume.
Residual Volume
The amount of air that remains after a maximum expiration.
What happens to the different lung volumes during exercise?
Tidal Volume - Increases
ERV - Stays the same
IRV - Stays the same
Residual Volume - Stays the same
What is the function of an artery?
Takes blood away from the heart.
What is the function of an vein?
Takes blood to the heart.
What is the function of an capillary?
Takes blood deep into the organs and muscles.
What kind of blood do arteries carry (and what is the exception)?
Oxygenated
except the pulmonary artery
What kind of blood do veins carry (and what is the exception)?
Deoxygenated
except the pulmonary vein
How are arteries specialised to complete their function?
-a thick outer wall
-a thick layer of elastic muscle
-a narrow lumen
This allows them to deal with high pressure.
(See Figure 4)
How are veins specialised to complete their function?
-a large lumen to deal with the high quantity of blood
-have valves to prevent backlog due to low pressure
(See Figure 4)
How are capillaries specialised to complete their function?
-only one cell thick for easy diffusion
-very narrow so it can go deep into the muscle (only one red blood cell fits)
(See Figure 4)
Define Vasoconstriction
The muscular walls construct to stem the flow of blood through the artery
(Gets tighter and smaller)
Define Vasodilation
The muscular walls dilate to allow blood to flow more freely through the artery
(Gets wider and bigger)
Define Hypothermia
When the body temperature drops too far (too cold)
Define Hyperthermia
When the body temperature increases too much (too hot)
Define Thermoregulation
The maintenance of a constant internal body temperature
Name the four heart chambers
Right Atrium - Left Atrium
Right Ventricle - Left Ventricle
Name the upper chambers of the heart
Atria
Right Atrium - Left Atrium
Name the lower chambers of the heart
Ventricles
Right Ventricle - Left Ventricle
Describe the transportation of blood starting with deoxygenated blood entering the Heart
Deoxygenated blood enters the Heart through the Vena Cava and into the Right Atrium
It then goes through the Tricuspid valve to the Right Ventricle
It is then pumped through the pulmonary valve and pulmonary artery to the lungs
Blood returns to the Heart through the pulmonary vein and enters the left atrium.
It is pumped into the left Ventricle by the Mitral Valve
It is the pumped out to the body through Aortic valve and the Aorta
Name the 4 valves
Tricuspid Valve
Pulmonary Valve
Mitral Valve
Aortic Valve
Name the 4 largest blood vessels in and out of the heart
Vena Cava
Pulmonary Artery
Pulmonary Vein
Aorta
Define Systole
Heart ventricles contract and pump blood to the arteries
Define Diastole
Heart ventricles relax and the heart fills with blood
What type of blood does the right side of the heart pump?
Deoxygenated
What type of blood does the left side of the heart pump?
Oxygenated
Define Stroke Volume
Volume of Blood pumped out of the Heart with each beat (ml)
Define Heart Rate
The amount of times your Heart beats per min (bpm)
Define Cardiac Output
This is the volume of blood pumped by the Heart per minute (ml/min)
What is the equation for Cardiac Output?
Stroke Volume X Heart Rate = Cardiac Output