BIO 2401 Anatomy and Physiology Exam at Central Alabama Community College
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Free BIO 2401 Anatomy and Physiology Exam at Central Alabama Community College Questions
Which cell type is an immature cell for connective tissue proper?
- A. Chondroblast
- B. Chondrocyte
- C. Fibroblast
- D. Fibrocyte
- E. Osteoblast
- F. Osteocyte
- G. Hemocytoblast
- H. Hemocytocyte
Explanation
The fibroblast is the immature cell in connective tissue proper. Fibroblasts are responsible for producing the components of the extracellular matrix, such as collagen and elastin fibers, and they play a crucial role in tissue repair and maintenance. As they mature, they become fibrocytes, which are less active and maintain the matrix.
Which of the following joint types would be found connecting the distal ends of the tibia and fibula?
- A. Suture
- B. Syndesmoses
- C. Gomphoses
- D. Symphyses
- E. Synchondroses
- F. Synovial
Explanation
The joint connecting the distal ends of the tibia and fibula is a syndesmosis, which is a type of fibrous joint. In a syndesmosis, the bones are connected by a ligament or an interosseous membrane, allowing for limited movement. This type of joint provides stability while still allowing a small amount of flexibility, which is essential for the proper functioning of the lower leg during movement.
Which of the following parts of the eye is the clear window of the eye?
- A. Cornea
- B. Lens
- C. Iris
- D. Retina
- E. Choroid
Explanation
The cornea is the clear, dome-shaped surface that covers the front of the eye. It acts as the "window" of the eye, allowing light to enter and helping to focus it as it passes through to the retina. The cornea provides most of the eye's focusing power and is transparent, which allows us to see clearly.
Which bone marking term means a rounded, articular projection?
- A. Tuberosity
- B. Crest
- C. Trochanter
- D. Line
- E. Tubercle
- F. Condyle
- G. Epicondyle
- H. Spine
- I. Head
- J. Facet
- K. Ramus
- L. Meatus
- M. Sinus
Explanation
A condyle is a rounded, articular projection at the end of a bone, typically involved in forming a joint. It is the surface that connects with another bone, allowing for movement at a joint. An example is the femoral condyles, which articulate with the tibia in the knee joint.
Which brain membrane contains the largest blood vessels and is a thin, net-like loose covering?
- A. Dura mater
- B. Arachnoid mater
- C. Pia mater
Explanation
The arachnoid mater is the middle layer of the meninges and contains the largest blood vessels that supply the brain. It is a thin, net-like membrane that resembles a spider's web and is loosely attached to the underlying pia mater. The space between the arachnoid mater and pia mater is called the subarachnoid space, which contains cerebrospinal fluid (CSF) and helps cushion the brain.
The ends of a long bone are called the
- A. Diaphysis
- B. Epiphysis
- C. Periosteum
- D. Endosteum
- E. Medullary ends
- F. Proximal lines
Explanation
The epiphysis refers to the ends of a long bone. It is the portion of the bone that is involved in joint formation and is typically covered with articular cartilage to reduce friction and absorb shock. The epiphysis contains spongy bone and is filled with bone marrow.
Which of the following is a correct description of anatomical position?
- A. Arms at shoulder level
- B. Palms facing posteriorly
- C. Body on tip toes
- D. Body facing forward
- E. Body facing forward and Body on tip toes
- F. Palms facing posteriorly and Arms at shoulder level
Explanation
The anatomical position is a standard reference position used to describe the location of body parts and their movements. The body is positioned as follows:
- The body is standing upright.
- The feet are slightly apart and flat on the ground.
- The arms are at the sides of the body.
- The palms are facing forward (anteriorly).
- The head is facing forward (anteriorly).
In the anatomical position, the palms should not be facing posteriorly, and the body is not on tiptoes. Therefore, D. Body facing forward is the correct description.
Which of the following is a transport mechanism that moves water through a cell membrane?
- A. Diffusion
- B. Osmosis
- C. Filtration
- D. Facilitated diffusion
Explanation
Osmosis is the process by which water moves across a cell membrane from an area of lower solute concentration to an area of higher solute concentration, typically through a selectively permeable membrane. This movement helps maintain balance in the cell's internal environment without the need for energy.
Which type of tissue has variable vascularity and contains matrix?
- A. Epithelial
- B. Connective
- C. Nervous
- D. Muscle
Explanation
Connective tissue is characterized by its variable vascularity (meaning it can have different amounts of blood supply, depending on the specific type of connective tissue) and the presence of an extracellular matrix. The matrix, composed of ground substance and fibers, provides support and structure to the tissue. Examples of connective tissue include bone, cartilage, blood, and adipose tissue.
The extracellular material that is found in some tissues and is composed of ground substance & fibers is the
- A. Mucus
- B. Elastin
- C. Matrix
- D. Fibrous
- E. Cartilaginous
Explanation
The matrix is the extracellular material found in connective tissues. It is composed of ground substance (a gel-like substance) and fibers (such as collagen, elastin, and reticular fibers) that provide structural support, elasticity, and strength to the tissue. The matrix is an essential component of tissues like cartilage, bone, and connective tissue in general, contributing to their function and integrity.
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