Cells
What does selectively permeable mean?
The regulation of what enters and leaves the cell
What are the four types of tissue?
Connective, Muscle, Epithelial, Nervous
What are the functions of the skeletal system?
support, protection, body movement, blood cell formation, and the storage of inorganic materials like calcium
What are the three types of muscle
Smooth, cardiac, and straited
What's the function of the nervous system?
To coordinate the body's system by receiving and sending information; maintaining homeostasis
What causes cancer?
When the checkpoints of the cell are ignored it causes uncontrolled cell division leading to cancer
What is a squamous cell? and where can it be found?
A flat cell, in the capillaries, air sacs, body cavities (I.e the mouth)
What are osteocytes?
They are mature bone cells that are enclosed in tiny chambers called Lacune
Label the neuromuscular junction (slide 5)
slide 6
What is the function of astrocytes?
To connect blood vessels and neurons
What concentration does water and molecules move?
Water: low to high
Molecules: high to low
What do tendons and ligaments connect to?
Tendon connect muscle to bones
Ligaments connect bones to bones
What's the foramen magnum?
A large opening through the bottom of the skull, where the spinal cord enters the skull
what are sarcolemma
A muscle fiber membrane that surrounds many myofibrils
Label the nueron (slide 7)
slide 8
Label a cell (slide 1)
slide 2
What are the types of cartilage?
hyaline, elastic, and fibrocartilage
What are the four types of joints? and describe where you might find them in your body
Saddle, pivot, hinge, ball and socket
thumb, wrist, knee, and shoulder
What is muscular dystrophy and Myasthenia Gravis
Muscular dystrophy is when muscles become larger even as they become weaker due to tissue and fat replacing working cell muscles due to the gene for dystrophin not coded properly.
Myasthenia Gravis is an autoimmune disease where the acetylcholine receptors are damaged.
What causes Multiple Sclerosis
Demyelination, when the nerves lose their myelin sheaths, causing the nerves to be unable to send or receive signals properly.
What are all the phases of Mitosis in order?
Interphase, Prophase, Metaphase, Anaphase, Telophase and Cytokineses
What is Epidermolysis bullosa and what causes it?
Lack of collagen seven which anchors the epidermis to the dermis causing the skin to be prone to injuries and sliding off
Label the bones of the skull (slide 3)
slide 4
What is the sliding filament theory and describe it
It explains how muscle contraction based on how muscle fibers (acting and myosin) slide against each other to generate tension in the overall muscle.
A nerve impulse tells the myosin heads connect to actin forming a cross-bridge and ATP and calcium are required to unbind them.
What are the functions of the lobes of the brain?
Frontal- left: Executive functions (analyzing, logic, etc.) right: creativity, decision making, and understanding the "big picture"
Parietal- both: understanding 3D space and dimensions
Temporal- left: core memory, speech, hearing, and smell | Right: Rhythm, inotation of speech, understanding facial expressions, smell, hearing, and rhythm
Occipital- Both: visual memory | Right: left eye | Left: right eye