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Apologia advanced Biology module 3

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  • Compare and contrast the dermis and the epidermis.
    They are layers of the skin. Epidermis is the outside layer made of epithelial cells, keratinized. Dermis-deeper, dense irregular connective tissue.
  • Compare and contrast sweat glands and sebaceous glands.
    Sebaceous-holocrine,secrete oil, protects and softens skin. Sweat-merocrine gland, secrete sweat, to cool
  • describe stratum corenum
    most superficial, 25-30 layers thick, these cells slough off, dead cells, no nucleus
  • label a, h, i, j, f
    a: frontal bone, h: parietal, i: temporal, j: occipital, f: maxilla
  • Name a benefit and a curse of sebaceous glands.
    Help skin maintain moisture and acne
  • What is the difference between cancellous and compact bone?
    Compact bone is made up of dense bone matrix organized into tubules called osteons.
  • What is the term that means making blood cells?
    Hemopoisis: Hemat:blood, poiesis:to make
  • What defines a long bone, and give an example.
    Longer than they are wide. Femur, fibula, metatarsals
  • In the skull, how many are there of each of these bones? Temporal, ethmoid, occipital and sphenoid.
    Temporal-2 (side of head) ethmoid-1 (b) Occipital-1 (back of head) sphenoid-1(inside)
  • Describe stratum lucidium.
    primarily only found in think skin (palms of hands and soles of feet)
  • Where is the mastoid process and what is it?
    prominence of the temporal bone behind the ear, to which neck muscles are attached
  • Describe stratum granulosum
    In this layer cells begin to die, these cells produce large amounts of keratin
  • describe Stratum basale
    once cell thick,, cells under go mitosis continually
  • What is the axial skeleton?
    the portion of the skeleton that supports and protects the head neck and trunk.
  • identify a, b, c, d, e
    a: sternum, b: rib, c costal cartilage, d: humerous e: sacrum
  • What defines short bones? Give an example.
    Bones that are about as long as they are wide. Tarsals, carpals
  • What kind of bone is the patella?
    sesamoid
  • name the bones in the head a, c, d, e, g.
    a)Frontal, c)lacrimal, d)zygomatic, e)vomer, g)mandible
  • Where are apocrine sweat glands found and what kind of gland are they?
    Armpits and pubic region, they are merocrine glands
  • In relation to bone, what are: meatus, foramen, and process?
    meatus:a passage , Foramen:an opening, process:a projection on a bone
  • What is Hemopoiesis?
    the process of manufacturing blood cells, and platelets. it occurs in the bone marrow
  • identify n, o, p, q
    n: femur, o: patella, p: tibia, q: fibula
  • In long bones, what is the hollow cavity called and what will you find there?.
    Medullary cavity, and you find yellow bone marrow which produce cartilage, fat and bone. Yellow bone marrow also aids in the storage of fats
  • What is a suture? (in relation to bones)
    a junction between the flat bones of the skull
  • What is the difference between a meatus and a foramen?
    A meatus is a passageway.”external auditory meatus” and a foramen is a hole in a bone where nerves and muscles pass through.” Foramen magnum”
  • Where will you find living cells in the epidermis?
    Stratum basale, the bottom layer, and stratum spinosum, the next layer.
  • What is the sweat gland and duct, and what is the sebaceous gland?
    Sweat gland h, sweat gland duct i, sebaceous gland k b is the pore for the duct of the sweat gland.
  • What are lines of cleavage?
    Where the collagen fibers in the dermis are lined up.
  • label the parts of the spine. t, u, v
    t: cervical vertebrae, u: thoracic vertebrae, lumbar vertebrae
  • What is the appendicular skeleton?
    The portion of the skeleton that attaches to the axial skeleton and has limbs attached
  • identify the region y and w
    y pectoral girdle, w pelvic girdle
  • What is the major functions of the sweat glands?
    cooling
  • What is the opposite of superficial?
    The opposite of superficial is deep. Skin is superficial to muscle, bones are deeper than muscle
  • What are c, d,and e ?
    c is the epidermis, d is the dermis, and e is the hypodermis
  • What is superficial?
    a directional term that indicates one structure is located more externally than another, or closer to the surface of the body
  • name the cell layers of the skin in order from deepest to most superficial.
    Stratum basale, stratum spinosum, stratum granulosum, stratum lucidium, stratum corneum
  • What are the three layers of hair?
    cortex, the medulla and the cuticle
  • What does costal refer to?
    relating to the ribs costal cartilage, intercostal spaces,
  • What are the functions of a melanocyte?
    The produce melenin, give the skin color to protect the cells from ultraviolet radiation.
  • Do all hair cells contain keratin?
    All differentiated hair cells have keratin, the matrix is made up of a mass of undifferentiated cells which have no keratin.
  • Where is bone marrow found and what does it do?
    In the cancelous bone of the long bones. Erythropoiesis formation of red blood cells and platelets
  • describe stratum spinosum
    several cells thick, also undergoes mitosis, melanocytes reside here