HUBS 191 Progress Test 1 Questions And Complete Answers.
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Course
HUBS 191
Institution
HUBS 191
What makes up the axial skeleton? - Answer skull, vertebral column, rib cage
What is recruitment? - Answer activating more motor units to make more force
What are flat bones? - Answer Thin plates of compact bone - some cancellous
What are flat bones used for? - Answer protectio...
HUBS 191 Progress Test 1 Questions
And Complete Answers.
What makes up the axial skeleton? - Answer skull, vertebral column, rib cage
What is recruitment? - Answer activating more motor units to make more force
What are flat bones? - Answer Thin plates of compact bone - some cancellous
What are flat bones used for? - Answer protection and muscle attachment
What are irregular bones? - Answer Variable in shape size and function
What is depolarisation? - Answer Membrane potential becomes less negative
what causes depolarisation? - Answer Na+ enters the cell
What are the features of the saddle joint? - Answer - biaxial
- flexion and extension
- abduction and adduction
- circumduction
- opposition
- e.g. carpometacarpal joint (thumb)
What does skeletal muscle do? - Answer - develop force
- control posture
- resist movement of joints
- under voluntary control
,- provide support and protection for soft internal organs
- voluntary control over major openings
- converts energy (in part) to heat to maintain core temperature
- provide a major store for energy and protein
What is membrane potential typical value? - Answer -70mV
What maintains the membrane potential? - Answer sodium potassium pump
what does a neutraliser muscle do? - Answer eliminate an unwanted movement caused by another
muscle
What is hypotonic? what does it cause? - Answer too much water in ECF causes cell to swell
what is a continuous variable? - Answer a variable that can take on any value
where is the pubis located? - Answer anterior aspect of the pelvic girdle
articulates with the other pubis to form the pubic symphysis
what is the structure of fibrocartilage? - Answer collagen fibres form bundles throughout matrix
orientation of fibres align with stresses
function is to resist compression and tension
what is plantar flexion? - Answer toes pointing to the ground
how is contraction of a muscle terminated? - Answer Ca2+ levels fall in sarcoplasm
what is a categorical variable? - Answer can summarise variables into categories or groups
, what is inversion of the foot? - Answer sole of foot faces towards midline
what are the features of the ball and socket joint? - Answer - multiaxial
- flexion and extension
- abduction and adduction
- circumduction
- rotation
- e.g. shoulder and hip
what are the conditions of the 2008 Human Tissue Act? - Answer 1. voluntary donation of bodies
2. requires dual signed consent by donor and immediate family member
3. most bodies are held for ~18 months, parts can be held longer for teaching and research
what is the primary centre of ossification? - Answer diaphysis or shaft
what happens once ADP and Pi are released from the myosin head? - Answer the myosin head flexes
causing the power stroke
how does the myosin head become recocked? - Answer myosin ATPase hydrolyses ATP to ADP and Pi
what are the three types of muscle action? - Answer concentric, isometric, eccentric
what does a third class lever do? - Answer provide a large range of movement and speed, i.e flexion at
elbow joint
what are the two main types of cartilage? - Answer hyaline (articular) and fibrocartilage
what is a triad? - Answer a membrane triplet, t-tubule and 2 terminal cisternae
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