CSCC BIO 2300 Unit 3 2024 Fully Composed Questions And 100% Verified Answers

CSCC BIO 2300 Unit 3 2024 Fully Composed Questions And 100% Verified Answers 2 rows of wrist bone - Row 1 S-Scaphiod L-Lunate Tri-Triquetrum P-Pistiform Row 2 T1-Trapezium T2-Trapezoid C- Capitate H-Hamate Acetabulum - Acromion (anterior, posterior, lateral) - adductor brevis - adduction at hip adductor longus - adduction at hip adductor magnus - lateral rotation adduction at hip hamstring: extension at hip Anatomical neck (anterior, posterior) - Another name for a root of the brachial plexus is: - Anterior Ramus- Roots- C5, C6, C7.C8 and T1 Example "root C6" Anterior inferior Iliac spine (AIIS) - Anterior superior Iliac spine (ASIS) - Axioappendicular Muscles - General attachments: From axial skeleton to appendicular skeleton General actions: Significant actions on pectoral girdle or at shoulder joint Biceps Brachii - Collective action on Radius: Supination of forearm. Flexion @ elbow biceps femoris (long head ) - flexion at knee extension at hip biceps femoris (short head) - flexion at knee Bones of each region of the upper limb - 1. Pectoral Girdle- 1 Clavicle & 1 Scapula 2. Arm (brachial region)- 1 Humerus 3. Forearm (antebrachial)- 1 Radius & 1 Ulna 4. Hand- 8 Carpals, 5 Metacarpals, 14 phalanges Bones of the pectoral girdle - 1) Clavicle Bone 2) Scapula Bone Brachialis - Action on ulna: Primary flexor @ elbow Capitulum (anterior) - Carpals - Compare the purpose of the anterior and posterior division of each trunk - Anterior- build nerves for anterior compartments of the upper limb Posterior- Build nerves for posterior compartments of the upper limb Compare the relationship that each of the two mensci has with its respective collateral ligament - Medial meniscus- Fused with medial collateral Lateral meniscus- Seperated from lateral collateral by popliteus muscle *initiates flexion of the knee Compare two types of veins of the upper limb - 1. Superficial: -Superficial to (outside of) deep fascia of UL -Travel through hypodermis (subcutaneous) 2. Deep: -Deep (inside of) deep fascia of UL -Travel with the arteries just outlined -Named same as arteries outlined Complete the statement "each of the 3 trunks branch distally into two _______________, one anterior and one posterior - Divisions Coracobrachialis - Action on humerus: Flexion @ shoulder Reinforce shoulder anteriorly coracoid process (anterior, posterior, lateral) - Coronoid Fossa (anterior, posterior) - coronoid process of ulna - Define extensor, flexor, carpi, pollicis, and digitorum in terms of what they mean as we name muscles that are located in the forearm. - Extensor- of digits and/or wrist- NOT ELBOW Flexor- of digits and/or wrist- NOT ELBOW Carpi- Action is limited to (only at) the wrist, tendons of these muscles DO NOT attach to phalanges Pollicis- Muscle acts upon the digit 1 (thumb/pollex) Digitorum- Muscle acts upon multiple digits (2-5) Define extensor, flexor, tibialis, fibularis, hallucis, and digitorum in terms of their meaning as we name muscles that are located in the leg - Extensor- extension of digits Flexor- flexion of digits Tibialis- action is limited to (only at) the ankle. Named currently because they will be the first tendon anterior and posterior to the distal tibia Fibularis- action is limited to (only at) the ankle. Named correctly because they will be the first tendon anterior and posterior to the distal fibula Hallucis- Muscle acts upon the digit 1 (hallux/great toe) Digitorum- Muscle acts upon multiple digits (2-5) Define the articulation that we refer to as the shoulder joint - Glenohumeral "shoulder" joint Specific articulation: Glenoid cavity (scapula) and head of humerus "ball [and very shallow] socket" Define the brachial plexus of nerves - -Nerves connecting spinal cord and upper limb. -Series of named highways carrying: Efferent/motor nerve fibers Afferent/sensory nerve fibers Define the lumbosacral plexus of nerves - Nerve connecting spinal cord and lower limb Series of names highways carrying: Efferent/motor= Nerve fibers Afferent/sensory= Nerve fibers Define the specific articulation that we refer to as the hip joint - - head of femur - Acetabulum of hip bone Define which roots communicate with each of the 3 trunks of the brachial plexus - Superior trunk- Communicate with C5 & C6 roots Middle trunk- communication of C7 root Inferior trunk- Communicates with C8 & T1 roots Deltoid - Action on humerus: primary abductor, flexion & extension, medial & lateral rotation Deltoid Tuberosity (anterior) - Describe brachioradialis muscle - Landmark muscle Most lateral muscle Does not cross wrist Attaches highest of humerus Acts as a weak flexor of the forearm (at the elbow) Describe each of the 3 ligaments that ONLY involve the scapula and the clavicle - 1. Acromioclavicular (AC) joint/ligament 2. Coracoclavicular ligament 3. Coracoacrominal Arch/Ligament prevents superior dislocation of head of humerus