click below
click below
Normal Size Small Size show me how
Exam 1 (Spring 19)
human anatomy 2019
Question | Answer |
---|---|
1) How many bones make-up the vertebral column prenatally? Postnatally? | Prenatally- 33 before Postnatally- 26 after fused |
What kind of plane divides the body or a structure into right and left parts? | Sagittal plane or median plane |
Which type of tissue forms ligaments of the skeleton? Why? | Dense connective tissue: Ligaments made of DCT and connect bones to bones at joints. |
What is the function of the simple squamous epithelium of the lungs? | Simple squamous epithelial cells in the alveoli allow oxygen from the air to enter the blood in the capillaries of the lung. |
4) What is the muscle of the trachea called? What kind of muscle tissue is it made of? | Trachealis muscle: Smooth muscle and soft CT |
What structure sits in the anterior mediastinum? | Thymus gland |
What is the most caudal portion of the sternum called? What is it made of? | Xiphoid process: Cartilage |
8) What are the unique traits of thoracic vertebrae? | Transverse costal facets & S/I Costal facets (demifacets) |
How many pairs of true ribs are there? What makes them true? | 7 pairs: They are attached directly to the sternum |
What kind of cartilage do we find in intervertebral discs? Why? | Fibrocartilage: |
What is the study of cells/tissues called? | Histology |
12) What structures are found at the caudal end of the chordae tendinae? | Atrioventricular and tricuspid valves |
Oxygen-poor blood enters which chamber of the heart? What vessels take it out of the heart? | Right chamber: Left atrium |
What type of epithelium lines the esophagus? Why? What is carried in its lumen? | stratified squamous epithelium |
What specific feature does the tubercle of the rib articulate with? | The facet located on the transverse process of the same numbered vertebra. |
16) The scapula’s spine is on which side of the bone? What is the process at the end of it called? | Posterior side: Acromion process |
What is the structural category for the glenohumeral joint? Functional? Shape? | Ball and Socket joint: Function- slightly moveable joint |
What nerve innervates the diaphragm? What is the diaphragm’s insertion? | Phrenic nerves: Laterally, muscle fibers insert into ribs 6–12 |
What happens to the PRESSURE in the thoracic cavity when the diaphragm contracts? | Moves downward and increases the space in your chest cavity |
20) What type of vertebra has transverse foramina? What passes through them? | Cervical vertebrae: Vertebral artery, vertebral veins and inferior cervical ganglion passes. |
What is the lateral articulation of the sacrum? | Hip bones |
What is the function of mucus in the trachea? Esophagus? | Trachea- Protect and stop foreign particles and chemicals entering the lungs Esophagus- as a lubricant for materials |
What is the functional category of a gomphosis? Where are they found? | Synarthrosis joint |
24) Which type of glands use ducts to carry their product? Name one. | Exocrine Glands: Sweat glands |
What nerve innervates the external intercostal muscles? Internal intercostals? Where are they located? | Intercostal nerves: Ribs |
What muscle has its origin on the sternum, clavicle and costal cartilages? | Pectoralis major |
What nerve innervates the trapezius muscle? | Accessory nerve |
28) What muscle is the AGONIST of arm extension? | Deltoid |
Which curves of vertebral column are secondary? What is their function? | Cervical and lumbar curves: Even distribution of weight |
What removes pathogens from lymph? What vessel typically brings lymph back into cardiovascular circulation? | The white blood cells: Subclavian vein |
Name one function of the fibrous skeleton of the heart? | Provide structure and support for the heart |
32) Which set of valves regulate the flow of blood moving in the cranial direction? | Semilunar valve |
Where do T-lymphocytes mature and become immunocompetant? | Thymus |
What kind of tissue creates peristalsis in the esophagus? | Smooth muscle tissue |
Which part of a vertebra is structured for weight bearing? Where is its position? | The body: Dorsal |
36) In which body cavity do serous membranes compartmentalize? What is benefit? | Abdominal & pelvic body cavities (abdominopelvic): |
Complete this sentence: The esophagus is ____________________to the trachea. | Dorsal |
What kind of cartilage helps keep the respiratory airways open? | hyaline cartilage |
What cells destroy pathogens near the respiratory membrane? | White blood cell (Alveolar macrophages) |
40) What are the muscular ridges of the hearts’ atria called? | Pectinate muscles |
Which heart chamber has the thickest myocardium? Why? | The myocardium is thickest in the left ventricle: Must create a lot of pressure to pump blood into the aorta |
Name the 2 mechanisms that divert blood from lungs in fetal circulation? Where are they located? What are they called postnatally? | Ductus arteriosus and Ductus venosus |
What do we call the “shaft” of a long bone? What is the space inside it called? What does it contain? | Diaphysis: contains bone marrow and adipose tissue |
44) What structural category of joints has a cavity? What fills the space? What produces it? What does it do? | Fibrous joints: fibrous CT holds the bones together and they therefore permit little or no movement. |
What type of tissue contains fat cells? Where would we find this tissue? | loose connective tissue: Hypodermis |
What is located in the right ventricle of heart that is absent from left? Function? | Pulmonary valve: pushing blood out of the heart and into the artery |
What does “form follows function” mean? Example? | posterior vs anterior teeth |
48) What is the study of the body’s function called? | Physiology |
What muscle controls quiet respiration? What property returns it to its original position after contraction? | External intercostal muscles and the diaphragm |
What type of tissue contains matrix, cells and fibers? | Loose connective tissue |
Which type of connective tissue is considered “atypical”? Why? | BLOOD: because it consists of blood cells surrounded by a nonliving fluid matrix called blood plasma. |